webknjaz · January 16, 2018 10:09
diff --git a/python-build.20180115145538.1345.log b/python-build.20180115145538.1345.log
 /var/folders/ms/xg67k5sn16xc7sdr_w3q45840000gn/T/python-build.20180115145538.1345 ~/project
 /var/folders/ms/xg67k5sn16xc7sdr_w3q45840000gn/T/python-build.20180115145538.1345/Python-3.6.4 /var/folders/ms/xg67k5sn16xc7sdr_w3q45840000gn/T/python-build.20180115145538.1345 ~/project
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 configure: creating ./config.status
 config.status: creating Makefile.pre
 config.status: creating Modules/Setup.config
 config.status: creating Misc/python.pc
 config.status: creating Misc/python-config.sh
 config.status: creating Modules/ld_so_aix
 config.status: creating pyconfig.h
 creating Modules/Setup
 creating Modules/Setup.local
 creating Makefile


 If you want a release build with all stable optimizations active (PGO, etc),
 please run ./configure --enable-optimizations


 clang -c -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers   -I. -I./Include -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include  -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include   -DPy_BUILD_CORE -o Programs/python.o ./Programs/python.c
 clang -c -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers   -I. -I./Include -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include  -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include   -DPy_BUILD_CORE -o Parser/acceler.o Parser/acceler.c
 clang -c -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers   -I. -I./Include -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include  -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include   -DPy_BUILD_CORE -o Parser/grammar1.o Parser/grammar1.c
 clang -c -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -I/usr/local/opt/openssl/include -I/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include  -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers   -I. -I./Include -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include  -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include -I/Users/distiller/.pyenv/versions/3.6.4/include   -DPy_BUILD_CORE -o Parser/listnode.o Parser/listnode.c
 In file included from Parser/grammar1.c:4:
 In file included from ./Include/Python.h:25:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        unsigned char   *_base;
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: note: insert '_Nullable' if the pointer may be null
        unsigned char   *_base;
                        ^
                          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: note: insert '_Nonnull' if the pointer should never be null
        unsigned char   *_base;
                        ^
                          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:32: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:32: note: insert '_Nullable' if the pointer may be null
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:32: note: insert '_Nonnull' if the pointer should never be null
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
                                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:40: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        int     (* _Nullable _read) (void *, char *, int);
                                                  ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:40: note: insert '_Nullable' if the pointer may be null
        int     (* _Nullable _read) (void *, char *, int);
                                                  ^
                                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:40: note: insert '_Nonnull' if the pointer should never be null
        int     (* _Nullable _read) (void *, char *, int);
                                                  ^
                                                   _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135:35: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135:35: note: insert '_Nullable' if the pointer may be null
        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
                                          ^
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135:35: note: insert '_Nonnull' if the pointer should never be null
        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
                                          ^
                                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:32: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        int     (* _Nullable _write)(void *, const char *, int);
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:32: note: insert '_Nullable' if the pointer may be null
        int     (* _Nullable _write)(void *, const char *, int);
                                          ^
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:32: note: insert '_Nonnull' if the pointer should never be null
        int     (* _Nullable _write)(void *, const char *, int);
                                          ^
                                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:46: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        int     (* _Nullable _write)(void *, const char *, int);
                                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:46: note: insert '_Nullable' if the pointer may be null
        int     (* _Nullable _write)(void *, const char *, int);
                                                        ^
                                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:46: note: insert '_Nonnull' if the pointer should never be null
        int     (* _Nullable _write)(void *, const char *, int);
                                                        ^
                                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140:18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140:18: note: insert '_Nullable' if the pointer may be null
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
                        ^
                          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140:18: note: insert '_Nonnull' if the pointer should never be null
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
                        ^
                          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:156:13: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 extern FILE *__stdinp;
            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:156:13: note: insert '_Nullable' if the pointer may be null
 extern FILE *__stdinp;
            ^
              _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:156:13: note: insert '_Nonnull' if the pointer should never be null
 extern FILE *__stdinp;
            ^
              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:157:13: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 extern FILE *__stdoutp;
            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:157:13: note: insert '_Nullable' if the pointer may be null
 extern FILE *__stdoutp;
            ^
              _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:157:13: note: insert '_Nonnull' if the pointer should never be null
 extern FILE *__stdoutp;
            ^
              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:158:13: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 extern FILE *__stderrp;
            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:158:13: note: insert '_Nullable' if the pointer may be null
 extern FILE *__stderrp;
            ^
              _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:158:13: note: insert '_Nonnull' if the pointer should never be null
 extern FILE *__stderrp;
            ^
              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:231:21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void     clearerr(FILE *);
                       ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:231:21: note: insert '_Nullable' if the pointer may be null
 void     clearerr(FILE *);
                       ^
                        _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:231:21: note: insert '_Nonnull' if the pointer should never be null
 void     clearerr(FILE *);
                       ^
                        _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:232:18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fclose(FILE *);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:232:18: note: insert '_Nullable' if the pointer may be null
 int      fclose(FILE *);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:232:18: note: insert '_Nonnull' if the pointer should never be null
 int      fclose(FILE *);
                     ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233:16: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      feof(FILE *);
                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233:16: note: insert '_Nullable' if the pointer may be null
 int      feof(FILE *);
                   ^
                    _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233:16: note: insert '_Nonnull' if the pointer should never be null
 int      feof(FILE *);
                   ^
                    _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:234:18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      ferror(FILE *);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:234:18: note: insert '_Nullable' if the pointer may be null
 int      ferror(FILE *);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:234:18: note: insert '_Nonnull' if the pointer should never be null
 int      ferror(FILE *);
                     ^
                      _Nonnull
 In file included from ./Programs/python.c:3:
 In file included from ./Include/Python.h:25:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        unsigned char   *_base;
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: note: insert '_Nullable' if the pointer may be null
        unsigned char   *_base;
                        ^
                          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: note: insert '_Nonnull' if the pointer should never be null
        unsigned char   *_base;
                        ^
                          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:32: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:32: note: insert '_Nullable' if the pointer may be null
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:32: note: insert '_Nonnull' if the pointer should never be null
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
                                           _Nonnull
 In file included from Parser/acceler.c:13/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :
 In file included from ./Include/pgenheaders.h:10:
 In file included from ./Include/Python.h:25int      fflush(FILE *);
 :
 40/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: warning:                      ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        unsigned char   *_base;
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:18: note: insert '_Nullable' if the pointer may be null
 int      fflush(FILE *);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:18: note: insert '_Nonnull' if the pointer should never be null
 int      fflush(FILE *);
                     ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:236:17: warninginsert '_Nullable' if the pointer may be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        unsigned char   *_base;
 int      fgetc(FILE *);: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                        ^
                          _Nullable 
        int     (* _Nullable _read) (void *, char *, int);
                                                  ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89:16: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134
                    ^
 :40In file included from Parser/listnode.c:4:
 In file included from /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:236:17:./Include/pgenheaders.h:10:
 In file included from ./Include/Python.h:        unsigned char   *_base;:  notenote: : 25:
 insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nullable' if the pointer may be null                        ^
                          _Nonnull int      fgetc(FILE *);

 89:16: warning        int     (* _Nullable _read) (void *, char *, int);
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                                  ^
                                                   _Nullable

                    ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134134

                     _Nullable
 :40: note: insert '_Nonnull' if the pointer should never be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:236        unsigned char   *_base;32: warning: :17
                        ^:
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        int     (* _Nullable _read) (void *, char *, int);
                                                  ^
                                                   _Nonnull
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135:35:  /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hwarningnote: insert '_Nonnull' if the pointer should never be null:134:32: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
 note: insert '_Nullable' if the pointer may be null
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89int      fgetc(FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135::                    ^
                     _Nonnull35        int     (* _Nullable _read) (void *, char *, int);
 16:                                           ^:
                                           _Nullable 
 note
 : insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);        unsigned char   *_base;
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h32: note                        ^
                          _Nullable                                            _Nullable: :237
 :insert '_Nonnull' if the pointer should never be null
 19: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        int     (* _Nullable _read) (void *, char *, int);
                                          ^
                                           _Nonnullint      fgetpos(FILE * __restrict, fpos_t *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:89                      ^

 :16: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        unsigned char   *_base;
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::                        ^
                          _Nonnull 
 237:19: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:135:32:: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]40: warning: 35notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: 
 : insert '_Nullable' if the pointer may be nullnote

        int     (* _Nullable _read) (void *, char *, int);:         int     (* _Nullable _read) (void *, char *, int);
                                          ^insert '_Nonnull' if the pointer should never be null

                                                  ^int      fgetpos(FILE * __restrict, fpos_t *);

        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
                                          ^
                      ^
                        _Nullable                                           _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:40/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note: 
 :134:32:136:insert '_Nullable' if the pointer may be null
 32:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        int     (* _Nullable _read) (void *, char *, int);
 :  warning237note: insert '_Nullable' if the pointer may be null
 ::                                                   ^
 19: note:                                                    _Nullable        int     (* _Nullable _read) (void *, char *, int);

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                          ^
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:        int     (* _Nullable _write)(void *, const char *, int);insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 134int      fgetpos(FILE * __restrict, fpos_t *);
                      ^
                        _Nonnull::40:                                          ^ note: insert '_Nonnull' if the pointer should never be null134:32
 :
 note: insert '_Nonnull' if the pointer should never be null
        int     (* _Nullable _read) (void *, char *, int);
                                                  ^
                                                   _Nonnull        int     (* _Nullable _read) (void *, char *, int);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:

                                          ^
                                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135:35:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h136:134:40:237: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :3240        int     (* _Nullable _read) (void *, char *, int);:  :warningwarning: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 note                                                  ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
 int      fgetpos(FILE * __restrict, fpos_t *);: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
        int     (* _Nullable _write)(void *, const char *, int);
                                          ^
 134                                           ^
                                           _Nullable:                                          ^
 40: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        int     (* _Nullable _read) (void *, char *, int);::237:13540: note: :
 insert '_Nullable' if the pointer may be null
 35                                                  ^
 : note: int      fgetpos(FILE * __restrict, fpos_t *);
                                           ^
                                            _Nullable

                                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:40:insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:134:40: note: insert '_Nonnull' if the pointer should never be null         fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
 note
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:         int     (* _Nullable _read) (void *, char *, int);
                                                  ^insert '_Nonnull' if the pointer should never be null

 :                                          ^                                                   _Nonnull
                                           _Nullable

 int      fgetpos(FILE * __restrict, fpos_t *);
                                           ^
                                            _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135136:32: note: insert '_Nonnull' if the pointer should never be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h35/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::
 238:: note18: : insert '_Nonnull' if the pointer should never be null
        int     (* _Nullable _write)(void *, const char *, int);
                                          ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 135                                           _Nonnull
 :35        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *fgets(char * __restrict, int, FILE *);
                    ^:                                          ^

                                           _Nonnull
        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:18:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135 note136:46::35: :insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: 136 
 note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :32insert '_Nullable' if the pointer may be nullchar    *fgets(char * __restrict, int, FILE *);        int     (* _Nullable _write)(void *, const char *, int);

 :
                                                        ^                     ^

                      _Nullable        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);
                                          ^
                                           _Nullable

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:18:         int     (* _Nullable _write)(void *, const char *, int);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note: insert '_Nonnull' if the pointer should never be null                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:135:35: note: 
 insert '_Nonnull' if the pointer should never be null
 136:46: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136        fpos_t  (* _Nullable _seek) (void *, fpos_t, int);note: 
 insert '_Nullable' if the pointer may be null                                          ^
                                           _Nonnullchar    *fgets(char * __restrict, int, FILE *);
                    ^
 :                      _Nonnull

 32: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238        int     (* _Nullable _write)(void *, const char *, int);

        int     (* _Nullable _write)(void *, const char *, int);                                                        ^
                                                         _Nullable
 :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136                                          ^
                                           _Nullable:42
 : warning: 32: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:32pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: note: 136warningchar    *fgets(char * __restrict, int, FILE *);: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                            ^insert '_Nonnull' if the pointer should never be null        int     (* _Nullable _write)(void *, const char *, int);
                                          ^

 :46: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:32: note: insert '_Nullable' if the pointer may be null
        int     (* _Nullable _write)(void *, const char *, int);
        int     (* _Nullable _write)(void *, const char *, int);
                                          ^                                          ^
                                           _Nonnull


        int     (* _Nullable _write)(void *, const char *, int);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:46:                                                         ^
                                                         _Nonnull

                                           _Nullable
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140:18        int     (* _Nullable _write)(void *, const char *, int);
                                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:: warning: 42/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :136::         struct __sFILEX *_extra; /* additions to FILE to not break ABI */
 note:                         ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 46
 : char    *fgets(char * __restrict, int, FILE *);
 :136:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140                                            ^
                                             _Nullable
 :18:32: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238: note: 42notenote: insert '_Nullable' if the pointer may be null
 ::         int     (* _Nullable _write)(void *, const char *, int);insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
                        ^char    *fgets(char * __restrict, int, FILE *);
                                                        ^
                                                         _Nullable


                          _Nullable 
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:46: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                            ^        int     (* _Nullable _write)(void *, const char *, int);
 140                                          ^
                                             _Nonnull

                                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136:46::note18: : insert '_Nonnull' if the pointer should never be null
 238note:6: warning warning: : : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *fgets(char * __restrict, int, FILE *);
        ^
        int     (* _Nullable _write)(void *, const char *, int);
        int     (* _Nullable _write)(void *, const char *, int);
                                                        ^
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:6                        ^
                          _Nonnull 
                                                        ^
 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:136                                                         _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:156insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::13140char    *fgets(char * __restrict, int, FILE *);:4618
 :        ^
          _Nullable 
 : warning: : warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:6: note: insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
 extern FILE *__stdinp;                        ^ note: char    *fgets(char * __restrict, int, FILE *);insert '_Nullable' if the pointer may be null

        ^
        int     (* _Nullable _write)(void *, const char *, int);


          _Nonnull 
                                                        ^
                                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140:18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:::136:4624 : notenote:             ^: 
 :insert '_Nullable' if the pointer may be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
                        ^
                          _Nullable 
        int     (* _Nullable _write)(void *, const char *, int);
                                                        ^
                                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:156:13FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nullable' if the pointer may be null
 140extern FILE *__stdinp;                          ^:
            ^18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
              _Nullable 
 :140:
 18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : note: insert '_Nonnull' if the pointer should never be null
        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        struct __sFILEX *_extra; /* additions to FILE to not break ABI *//Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140::156:13240:24: note: 18insert '_Nullable' if the pointer may be null: note:
 note: : insert '_Nullable' if the pointer may be nullFILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));


                          ^
                            _Nullable
                        ^
                          _Nonnull         struct __sFILEX *_extra; /* additions to FILE to not break ABI */

                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:24:                           _Nullable 
 insert '_Nonnull' if the pointer should never be null
 note: extern FILE *__stdinp;
            ^
              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:156insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:140:FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));:
 18: 157:13                          ^
                            _Nonnull13:: warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 noteextern FILE *__stdinp;
            ^
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:60 warning: : warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        struct __sFILEX *_extra; /* additions to FILE to not break ABI */
 :: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                        ^
                          _Nonnull 

 156:13: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 :                                                              ^extern FILE *__stdinp;
            ^
 156:13              _Nullable 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 extern FILE *__stdoutp;
            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:156:13: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:157note: : 13insert '_Nonnull' if the pointer should never be null:warning: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]extern FILE *__stdinp;
 note:             ^
              _Nonnull 
 insert '_Nullable' if the pointer may be null
 extern FILE *__stdinp;
            ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hextern FILE *__stdoutp;:240:
            ^60:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h157
              _Nullable : note
 :156:13: note:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: insert '_Nullable' if the pointer may be null:15713: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 : extern FILE *__stdoutp;
 :13: noteinsert '_Nullable' if the pointer may be null
 :             ^
 insert '_Nonnull' if the pointer should never be null
 extern FILE *__stdinp;
            ^
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));extern FILE *__stdoutp;
            ^
              _Nonnull               _Nullable 

                                                              ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                                                                _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:158:13: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hextern FILE *__stderrp;
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:60            ^:157
 : note: 156insert '_Nonnull' if the pointer should never be null
 :13/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:158:FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));:: note
 13: :                                                              ^
                                                                _Nonnull note: 
 13: insert '_Nullable' if the pointer may be null
 insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hextern FILE *__stdoutp;
            ^
 note: extern FILE *__stderrp;
            ^
              _Nullable 
 insert '_Nonnull' if the pointer should never be null
 :240:6: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]extern FILE *__stdinp;
            ^
 158:
 13:               _Nonnull note: insert '_Nonnull' if the pointer should never be nullFILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
        ^


 extern FILE *__stderrp;
            ^
              _Nonnull /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:157:
 13/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: warning: 240:6pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:extern FILE *__stdoutp;              _Nullable 231:
            ^: note: 

 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:157:13: note: insert '_Nonnull' if the pointer should never be null21FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
        ^:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h warning:: 
 157pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :extern FILE *__stdoutp;void     clearerr(FILE *);13: 

                       ^
            ^
              _Nonnull 

          _Nullable 
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:158:extern FILE *__stdoutp;/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:231
 13::            ^
 warning:               _Nullable 
 21:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240 note: :6:insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]void     clearerr(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 157:
 13:                       ^extern FILE *__stderrp;
            ^
  note: insert '_Nonnull' if the pointer should never be null

                        _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:noteFILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 : insert '_Nonnull' if the pointer should never be null
 158:
 13: note:         ^
 extern FILE *__stdoutp;
          _Nonnull 
 insert '_Nullable' if the pointer may be null
            ^
              _Nonnull extern FILE *__stderrp;
            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h231:21: note: insert '_Nonnull' if the pointer should never be null

 void     clearerr(FILE *);::244
 158::              _Nullable 
 19: warning:                        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:158:13:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] 13: 
 notewarning: int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                      ^

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                        _Nonnullextern FILE *__stderrp;
            ^
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244:19: 
 extern FILE *__stderrp;
            ^
              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:232:18: warningnote: insert '_Nullable' if the pointer may be null
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                      ^
 231:21:int      fclose(FILE *); :158warning: :13:
                     ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] note: 
                        _Nullableinsert '_Nullable' if the pointer may be null
 void     clearerr(FILE *);extern FILE *__stderrp;

            ^
              _Nullable                        ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:232:18
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244:19/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h158 :231:13: note: noteinsert '_Nonnull' if the pointer should never be null
 : :: note: insert '_Nullable' if the pointer may be null
 21:insert '_Nonnull' if the pointer should never be nullint      fclose(FILE *);
 extern FILE *__stderrp;
 note                     ^
                      _Nullable: insert '_Nullable' if the pointer may be null
 int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                      ^
 void     clearerr(FILE *);
                        _Nonnull

            ^
              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::244232
                       ^:44: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                        _Nullable
 :18:231:21:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h : warning: 231pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note: 
 :21: int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                                               ^insert '_Nonnull' if the pointer should never be nullnote
 : 
 insert '_Nonnull' if the pointer should never be null
 int      fclose(FILE *);
 void     clearerr(FILE *);
                       ^                     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244void     clearerr(FILE *);
                       ^
                        _Nonnull

                      _Nonnull:44:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:231/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233:16: 232:18::21: int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 note                                               ^warning: warning: : 
                                                 _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      feof(FILE *);
                   ^int      fclose(FILE *);

                     ^
 :244:44: note: insert '_Nonnull' if the pointer should never be null
 void     clearerr(FILE *);
                       ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);

 :                        _Nullable
 232:18                                               ^
                                                 _Nonnull
 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233:16: insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
 :231:int      feof(FILE *);
 21int      fclose(FILE *);
                   ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                     ^: note245:22
 :
                      _Nullable
                    _Nullable: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     clearerr(FILE *);
                       ^
                        _Nonnull
 warning: :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:232232/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233::pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:18: 1618
 warningint      fputc(int, FILE *);: : 
 note                         ^
 : insert '_Nonnull' if the pointer should never be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:245:22:int      feof(FILE *);
 
 :                   ^note: insert '_Nullable' if the pointer may be null int      fclose(FILE *);note: 


 insert '_Nonnull' if the pointer should never be nullint      fputc(int, FILE *);
                     ^
                    _Nonnull

 int      fclose(FILE *);                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                     ^
 :234:18:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                       _Nonnull:232warning: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 18int      ferror(FILE *);:245:22
                     ^:
 : note
 :  note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fclose(FILE *);
                     ^
                      _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::
 insert '_Nonnull' if the pointer should never be null
 233/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fputc(int, FILE *);
                         ^
 :16::232:234 :18                          _Nonnullwarning
 18: note: : insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      ferror(FILE *);
 :                     ^int      feof(FILE *);:246 
                   ^
 note: :23: insert '_Nonnull' if the pointer should never be null

 int      fclose(FILE *);
                     ^
                      _Nullable
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233:16: warning: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :233:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                          ^
 insert '_Nullable' if the pointer may be null
 :234:18: int      feof(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:16:
                   ^
 warning:                     _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 246:note: insert '_Nonnull' if the pointer should never be null
 int      feof(FILE *);int      ferror(FILE *);
                     ^

 23                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233                      _Nonnull
 :16: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      feof(FILE *);
                   ^
                    _Nonnull
 : note:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:18233int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
 :: warning16: : note: insert '_Nullable' if the pointer may be null                          ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      fflush(FILE *);
                     ^

                            _Nullable
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:18int      feof(FILE *);234:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::                   ^
                    _Nullable246
 18:23:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:233  note:16:::   notewarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note: insert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null

 int      fflush(FILE *);
                     ^

 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                          ^                      _Nullable

                            _Nonnull
 : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      ferror(FILE *);
 :235246int      feof(FILE *);::18:
 42:  note: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                   ^

                     ^
 insert '_Nonnull' if the pointer should never be null                    _Nonnull

 int      fflush(FILE *);

                     ^
                      _Nonnullint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                             ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:234:
 18
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:236:17/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::int      ferror(FILE *);246:42: note 
 warning: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);234:18
 :int      fgetc(FILE *); note: insert '_Nullable' if the pointer may be null
                                             ^int      ferror(FILE *);

                                               _Nullable
                     ^
                     ^
                      _Nullable

                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:234:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h18: :246:42::234: note: 18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::insert '_Nonnull' if the pointer should never be null note: 
 insert '_Nonnull' if the pointer should never be null
 236note: insert '_Nullable' if the pointer may be nullint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);

                                             ^
                                               _Nonnull
 int      ferror(FILE *);
                     ^:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247int      ferror(FILE *);

 17                      _Nonnull
 :                      ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: insert '_Nullable' if the pointer may be null
 20::int      fgetc(FILE *);
                    ^234: 
 18warning:                      _Nullable: note
 18: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:
 insert '_Nonnull' if the pointer should never be null
 236:17size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 int      ferror(FILE *);
 : note                    ^
 : insert '_Nonnull' if the pointer should never be null

                     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fgetc(FILE *);
 :                    ^int      fflush(FILE *);247
                     _Nonnull
 :20/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::

                     ^ note237                      _Nonnull

 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:18:insert '_Nullable' if the pointer may be null:19 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: 
 :: warningsize_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
                    ^: insert '_Nullable' if the pointer may be null

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                      _Nullableint      fflush(FILE *);int      fgetpos(FILE * __restrict, fpos_t *);235

                      ^
                     ^
                      _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:19: note: :18:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning235:18:insert '_Nullable' if the pointer may be null: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 247:20int      fgetpos(FILE * __restrict, fpos_t *);: 
                      ^
                        _Nullable
 int      fflush(FILE *);
 notenote: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::                      ^
 237:insert '_Nonnull' if the pointer should never be null
 19: note: int      fflush(FILE *);
                     ^
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235int      fgetpos(FILE * __restrict, fpos_t *);                      _Nonnullsize_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);:
 18:
                      ^ 
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                    ^
                      _Nonnull

                        _Nonnull
 :: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h236insert '_Nullable' if the pointer may be null::17237::40:  warning
 :247:77: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fflush(FILE *);
                     ^
 int      fgetc(FILE *);                      _Nullable: 

                    ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 int      fgetpos(FILE * __restrict, fpos_t *);
                                                                             ^

                                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:235:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:18: 40note:: note: 236: :insert '_Nullable' if the pointer may be null
 17insert '_Nonnull' if the pointer should never be null
 247:77: noteint      fgetpos(FILE * __restrict, fpos_t *);:: insert '_Nullable' if the pointer may be null
                                           ^
 
 int      fgetc(FILE *);
 int      fflush(FILE *);
                    ^
                     _Nullable
                                            _Nullablenote: insert '_Nullable' if the pointer may be null                     ^
                      _Nonnull


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:236:17: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hsize_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 :237int      fgetc(FILE *);
                    ^
                                                                             ^:
                                                                               _Nullable
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:40: 236:236/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::17:17247: note:  note: insert '_Nullable' if the pointer may be nullnote: 
 insert '_Nonnull' if the pointer should never be nullint      fgetc(FILE *);:
 insert '_Nonnull' if the pointer should never be null77: note: 
 insert '_Nonnull' if the pointer should never be nullint      fgetpos(FILE * __restrict, fpos_t *);int      fgetc(FILE *);

                                           ^
                                            _Nonnull

                    ^
                     _Nullable
 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238                                                                             ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

 :236:17:                    ^
                     _Nonnull
 note                                                                               _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:: :insert '_Nonnull' if the pointer should never be null
 19int      fgetc(FILE *);
                    ^18
 :                     _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 237:19:  warning: int      fgetpos(FILE * __restrict, fpos_t *);warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]char    *fgets(char * __restrict, int, FILE *);


                      ^
                    ^
 :26: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:int      fgetpos(FILE * __restrict, fpos_t *);FILE    *freopen(const char * __restrict, const char * __restrict,

                      ^
                            ^
 18: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::19insert '_Nullable' if the pointer may be null:248237
 :: :notechar    *fgets(char * __restrict, int, FILE *);26:
                    ^
                      _Nullable19:  
 note: : insert '_Nullable' if the pointer may be null
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nullable' if the pointer may be nullint      fgetpos(FILE * __restrict, fpos_t *);

 238insert '_Nullable' if the pointer may be nullint      fgetpos(FILE * __restrict, fpos_t *);
                      ^
 :18:                        _Nullable
 note:                       ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                        _Nullable

 237:19: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237insert '_Nonnull' if the pointer should never be null
 :
 19: char    *fgets(char * __restrict, int, FILE *);int      fgetpos(FILE * __restrict, fpos_t *);
 note: insert '_Nonnull' if the pointer should never be null

                    ^
                      _Nonnull
 FILE    *freopen(const char * __restrict, const char * __restrict,int      fgetpos(FILE * __restrict, fpos_t *);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                            ^                      ^
                        _Nonnull
 :238                      ^
                        _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:40:
 42/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                              _Nullable:: warningchar    *fgets(char * __restrict, int, FILE *);: 237:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]40
                                            ^:
 warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fgetpos(FILE * __restrict, fpos_t *);
                                           ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:42: note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:
 40: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 :248:int      fgetpos(FILE * __restrict, fpos_t *);int      fgetpos(FILE * __restrict, fpos_t *);
 26:                                            ^
                                            _Nullable
 note
                                           ^: 
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:40FILE    *freopen(const char * __restrict, const char * __restrict,char    *fgets(char * __restrict, int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 237
                                            ^                            ^
                              _Nonnull
 : note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 int      fgetpos(FILE * __restrict, fpos_t *);
                                           ^:40:248: note: 
                                            _Nonnullinsert '_Nullable' if the pointer may be null51

                                             _Nullable
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fgetpos(FILE * __restrict, fpos_t *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^
 :238:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248::238:
                                           ^
                                            _Nullable
 42:18:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:237:40: note warning: : 51pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :insert '_Nonnull' if the pointer should never be nullnote: char    *fgets(char * __restrict, int, FILE *);
 
 note: insert '_Nonnull' if the pointer should never be nullint      fgetpos(FILE * __restrict, fpos_t *);insert '_Nullable' if the pointer may be null

                    ^
                                           ^
                                            _Nonnullchar    *fgets(char * __restrict, int, FILE *);
 FILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^
                                                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:24818: :51: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null
 :
 note238:: 18insert '_Nullable' if the pointer may be null
 : char    *fgets(char * __restrict, int, FILE *);
                    ^warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                            ^
                                             _NonnullFILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^
                                                       _Nonnull


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *fgets(char * __restrict, int, FILE *);                      _Nullable

 :249:23:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: 238:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :6:                 FILE * __restrict) __DARWIN_ALIAS(freopen);18

 : note                    ^
 : insert '_Nonnull' if the pointer should never be null 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                      ^
 :238:char    *fgets(char * __restrict, int, FILE *);
 warning                    ^
                      _Nonnull
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 18: char    *fgets(char * __restrict, int, FILE *);
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238249:238:note:: 6:23:42: : notenote: insert '_Nullable' if the pointer may be null : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be null


 char    *fgets(char * __restrict, int, FILE *);char    *fgets(char * __restrict, int, FILE *);
                 FILE * __restrict) __DARWIN_ALIAS(freopen);insert '_Nullable' if the pointer may be null
                      ^
                        _Nullable

                                            ^        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:

          _Nullable 249:23: 
 note: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:char    *fgets(char * __restrict, int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null
 :42: note: 238insert '_Nullable' if the pointer may be null                 FILE * __restrict) __DARWIN_ALIAS(freopen);

 :6:                      ^
 char    *fgets(char * __restrict, int, FILE *);
                                            ^
                                             _Nullable
 note: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:insert '_Nonnull' if the pointer should never be null
 42:                    ^char    *fgets(char * __restrict, int, FILE *);
        ^
                        _Nonnull          _Nonnull  note: insert '_Nonnull' if the pointer should never be null


                      _Nullable
 char    *fgets(char * __restrict, int, FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:18                                            ^
                                             _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::238
 note: insert '_Nonnull' if the pointer should never be null
 6: warning: :char    *fgets(char * __restrict, int, FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                    ^
                      _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 6240FILE    *freopen(const char * __restrict, const char * __restrict,/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:::24: warning:  238
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: :42: warning: char    *fgets(char * __restrict, int, FILE *);        ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *fgets(char * __restrict, int, FILE *);
                                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:6: note: FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                          ^

 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:24:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238 note: :insert '_Nullable' if the pointer may be nullFILE    *freopen(const char * __restrict, const char * __restrict,
        ^
 42: note: insert '_Nullable' if the pointer may be null
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                          ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        ^
          _Nullable char    *fgets(char * __restrict, int, FILE *);
                                            ^
                                             _Nullable
 :
                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238:42: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:char    *fgets(char * __restrict, int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:248
                                            ^24:
                                             _Nonnull
 note: :insert '_Nonnull' if the pointer should never be null
 6: 238:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238note: :6:insert '_Nonnull' if the pointer should never be null
 warning: FILE    *freopen(const char * __restrict, const char * __restrict,:FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen)); 
        ^
          _Nonnull 

                          ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: :
                            _Nonnull
 insert '_Nullable' if the pointer may be nullchar    *fgets(char * __restrict, int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

        ^
 :240:60: warning250:18: char    *fgets(char * __restrict, int, FILE *);
        ^: warning
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h          _Nullable pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                     ^

 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:18238:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238 note:: : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnotechar    *fgets(char * __restrict, int, FILE *);6::240::  60note
 : note        ^
          _Nullable : : insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null


 char    *fgets(char * __restrict, int, FILE *);
        ^
          _Nonnull 

 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^
                                                                _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:238::int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240624: ::warning: 60 note: insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *fgets(char * __restrict, int, FILE *);
                     ^
 : note: insert '_Nonnull' if the pointer should never be null
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                       _Nullable
                          ^
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^
                                                                _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:18: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 note240:240:        ^
          _Nonnull 
 :24: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:6: warning: note: 240insert '_Nullable' if the pointer may be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:24
 insert '_Nonnull' if the pointer should never be null
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);

                     ^
                       _Nonnull
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
        ^:FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));

                          ^
                            _Nullable250:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:43/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:6: note: insert '_Nullable' if the pointer may be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning240:24:240FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :24: note:         ^int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 
 note: insert '_Nullable' if the pointer may be null
          _Nullable 
 insert '_Nonnull' if the pointer should never be null
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                          ^                                              ^

                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:6: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                          ^
 250
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240                            _Nonnull
 ::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:2404324:60::: note: insert '_Nullable' if the pointer may be nullFILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 note: 
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);        ^
          _Nonnull insert '_Nonnull' if the pointer should never be null
                                              ^
                                                _Nullablewarning
 : 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244:
 19: warning: FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:43: note: int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                      ^
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));insert '_Nonnull' if the pointer should never be null

                          ^
                            _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:60::int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);240:60: note: insert '_Nullable' if the pointer may be null

 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                              ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^:244:19: 
                                                _Nonnull

                                                                _Nullable
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:60: note: insert '_Nullable' if the pointer may be null
 :240::60int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 note: : note: 251:17insert '_Nonnull' if the pointer should never be null
 : warninginsert '_Nullable' if the pointer may be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^
                                                                _Nonnull
 int      fseek(FILE *, long, int);
                    ^
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
                                                              ^
                                                                _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:60::                       ^6note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: warning251FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));

                        _Nullable
                                                              ^
                                                                _Nonnull
 : :17/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 ::: note: 240FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 insert '_Nullable' if the pointer may be null
        ^:int      fseek(FILE *, long, int);
 6
                    ^
 : warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240244: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:19:                      _Nullablenote: insert '_Nonnull' if the pointer should never be null:
 6:
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:251insert '_Nullable' if the pointer may be null
 :17
 : note: FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
 insert '_Nonnull' if the pointer should never be nullint      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
        ^


                      ^int      fseek(FILE *, long, int);
                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                     _Nonnull
        ^:240:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
          _Nullable 
 :                         _Nonnull252:19note: insert '_Nullable' if the pointer may be null: 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:240:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:2446int      fsetpos(FILE *, const fpos_t *);:240::
 446                      ^:: 
 note: : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note
 :: warning252:19: noteinsert '_Nonnull' if the pointer should never be nullFILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
        ^

          _Nonnull 
 : insert '_Nullable' if the pointer may be null
 int      fsetpos(FILE *, const fpos_t *);
                      ^
                       _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252:19: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244int      fsetpos(FILE *, const fpos_t *);
                      ^:int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 19: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244:19                                               ^: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                       _Nonnull

 int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                      ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                      ^:252:35: warning: 
 44244:19:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 int      fsetpos(FILE *, const fpos_t *);
                                      ^: int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);244
 note: 
 insert '_Nullable' if the pointer may be null
                      ^
                        _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252:int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :35:244 19:                                               ^note :
                                                 _Nullable: insert '_Nullable' if the pointer may be null
 19: note: note: insert '_Nonnull' if the pointer should never be null

 insert '_Nullable' if the pointer may be null
 int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                      ^
                        _Nonnull
 int      fsetpos(FILE *, const fpos_t *);
                                      ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244
                                       _Nullable
 :44int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::252                        _Nullable
 : :35:note note: : insert '_Nonnull' if the pointer should never be null
 244:int      fsetpos(FILE *, const fpos_t *);
                                      ^44: 
                                       _Nonnull
 warning: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:253:18: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 long     ftell(FILE *);int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
 :244
                    ^                                               ^                                               ^

                                                 _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:253:18: note: insert '_Nullable' if the pointer may be null
 :long     ftell(FILE *);
                    ^19/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:244:44:
 note: insert '_Nonnull' if the pointer should never be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                     _Nullable
 : note: int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:245
 :253insert '_Nullable' if the pointer may be null
 :18: noteint      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);22
 : : warning: insert '_Nonnull' if the pointer should never be null                                               ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                                 _Nullable
 int      fputc(int, FILE *);long     ftell(FILE *);


                      ^
                        _Nonnull
                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                     _Nonnull
                         ^
 244/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h44: note: insert '_Nonnull' if the pointer should never be null
 27:244:44: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                                               ^
                                                 _Nonnull

 245:22: note: insert '_Nullable' if the pointer may be null
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                           ^
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:27: noteint      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                                               ^
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:245:22int      fputc(int, FILE *);
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                         ^
                          _Nullable:
 : 244:44:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                           ^:245:22warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] 

                             _Nullable
 :noteint      fputc(int, FILE *);
                         ^ note: 
 insert '_Nonnull' if the pointer should never be null: insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:int      fputc(int, FILE *);int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 27:                                               ^
 
                                                 _Nullable
                         ^
                          _Nonnull
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::245:24622:244:: note: insert '_Nullable' if the pointer may be null
 23: :44: notewarning: : insert '_Nonnull' if the pointer should never be null
 int      fputc(int, FILE *);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                                               ^
                                                 _Nonnull
 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                          ^
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                           ^
                             _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246:23: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:84: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:245:22: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                         ^
 warningint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);:                           _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                          ^
 int      fputc(int, FILE *);
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                            _Nullable
                                                                                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:245:22: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246:23: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254                         ^::insert '_Nonnull' if the pointer should never be null
 
 note: insert '_Nonnull' if the pointer should never be null
 84: noteint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
 int      fputc(int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                          ^
 : insert '_Nullable' if the pointer may be null
                         ^

                            _Nonnull
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246:245:22: note: insert '_Nullable' if the pointer may be null
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);int      fputc(int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :
 246:23: warning:                          ^
 42:                                                                                     ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning
                          _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:245:22: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: insert '_Nonnull' if the pointer should never be null
 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);int      fputc(int, FILE *);:
                                                                                      _Nullable246

 :23:
                         ^ note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                             ^int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                          ^254

                            _Nullable

 :84: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246::                          _Nonnull42size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
 246
 :23                                                                                    ^
                                                                                      _Nonnull:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 note: :insert '_Nonnull' if the pointer should never be null
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:255noteint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);: 246insert '_Nullable' if the pointer may be null::
                          ^
 2316
 :: warning: int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                              ^                            _Nonnull

 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                               _Nullable
 int      getc(FILE *);int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
 :42: 
                   ^warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                          ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246:42:
 noteint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                             ^
 : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:255:
 16/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246:42:
                                             ^:int      getc(FILE *);
                   ^
 246:23                    _Nullable

                                               _Nonnull
 : note note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 255::16:247 insert '_Nullable' if the pointer may be nullinsert '_Nullable' if the pointer may be nullnote: 
 insert '_Nonnull' if the pointer should never be null

 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                          ^
                            _Nullable
 :int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                             ^20int      getc(FILE *);
                   ^
 : warning
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                               _Nullable                    _Nonnull:246:

 23: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:246:int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 257: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]42                          ^

 : note: :17:size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);                             _Nonnull
 warning: 
                    ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *gets(char *);insert '_Nonnull' if the pointer should never be null

                   ^
 :246:42: warning: int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                             ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                                               _Nonnull

 257:17: note: insert '_Nullable' if the pointer may be null
 :20char    *gets(char *);
                   ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
 : note
                    _Nullable
                                             ^: :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257:20: 17: note: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *gets(char *);
 :
 insert '_Nullable' if the pointer may be null
                   ^
                    _Nonnullsize_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 246:42size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);

 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                    ^
                    ^
                      _Nullablenote: 
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247:20::257 int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                             ^
                                               _Nullable
 :247note: ::20: note: 6insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null

 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
                    ^size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);char    *gets(char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                    ^
                      _Nullable

        ^

                      _Nonnull
 :246:42: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                             ^
                                               _Nonnull
 247:20: note: :insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247:247:77:
 257: warning: :20size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 : warning6: note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null                    ^
                      _Nonnull

 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
                                                                             ^
 : char    *gets(char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247:77:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

        ^size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247:77:size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note                                                                             ^
 : insert '_Nullable' if the pointer may be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247
          _Nullable size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 :77
 247:20: note:                                                                              ^
                                                                               _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note257
 : : insert '_Nullable' if the pointer may be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247:6insert '_Nullable' if the pointer may be null:77: 
 note: insert '_Nonnull' if the pointer should never be null size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 note: insert '_Nonnull' if the pointer should never be null                                                                             ^
                                                                               _Nullable
 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);

                    ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:char    *gets(char *);                      _Nullable
 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 247:
        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:247                                                                             ^
                                                                               _Nonnull
 77: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: 
          _Nonnull 
 insert '_Nonnull' if the pointer should never be null
 :20: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hsize_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
                                                                             ^248:26:258:: warningnote25: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: 
                                                                               _Nonnull
 :
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *freopen(const char * __restrict, const char * __restrict,
 :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nonnull' if the pointer should never be null                            ^


 void     perror(const char *);248:size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:

 26                           ^
 248:: warning:                     ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:26258:25: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::247pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :77: warning: FILE    *freopen(const char * __restrict, const char * __restrict,
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                            ^
 insert '_Nullable' if the pointer may be null
 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
                                                                             ^
 void     perror(const char *);
                           ^
                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:26/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::247:: note 258:note: : 77insert '_Nullable' if the pointer may be null
 :25:FILE    *freopen(const char * __restrict, const char * __restrict,
                            ^ insert '_Nullable' if the pointer may be nullnote: 
                              _Nullable
 insert '_Nonnull' if the pointer should never be null
 note: insert '_Nullable' if the pointer may be null
 void     perror(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248
 size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);

                           ^                                                                             ^
                                                                               _Nullable
                            _Nonnull

 :26: note: insert '_Nonnull' if the pointer should never be null
 FILE    *freopen(const char * __restrict, const char * __restrict,
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *freopen(const char * __restrict, const char * __restrict,:                            ^
                              _Nullable
                            ^
                              _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 247259/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :::24248/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 248:51::warning 26: note: 77: insert '_Nonnull' if the pointer should never be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *freopen(const char * __restrict, const char * __restrict,
 notewarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                            ^: 
 insert '_Nonnull' if the pointer should never be null

                              _Nonnull
 FILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:int      printf(const char * __restrict, ...) __printflike(1, 2);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:size_t   fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
 248:51                           ^

 :51: warning :                                                                              ^note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 FILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^:FILE    *freopen(const char * __restrict, const char * __restrict,
                                                       _Nullable

                                                                               _Nonnull259:

                                                     ^
 24: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      printf(const char * __restrict, ...) __printflike(1, 2);
 248:248:51: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:26:51::                           ^FILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^ 
                                                       _Nonnullnote
 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::                              _Nullableinsert '_Nullable' if the pointer may be nullwarning: 

 249:23: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:259:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]FILE    *freopen(const char * __restrict, const char * __restrict,
                 FILE * __restrict) __DARWIN_ALIAS(freopen);
                      ^
                                                     ^
                                                       _Nullable24
 FILE    *freopen(const char * __restrict, const char * __restrict,
                            ^
 : note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      printf(const char * __restrict, ...) __printflike(1, 2);248:
                           ^
 26:                              _Nonnull

 51: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:249note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260:23::21FILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^ :
                                                       _Nonnull
 warningFILE    *freopen(const char * __restrict, const char * __restrict,/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:249: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 noteint      putc(int, FILE *);
 :                         ^:insert '_Nullable' if the pointer may be null

 23: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 FILE * __restrict) __DARWIN_ALIAS(freopen);
                      ^
                 FILE * __restrict) __DARWIN_ALIAS(freopen);
                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:249                            ^
                              _Nullable                        _Nullable

 :23: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::248249:::26: note: 2321:insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null note: 
 :
 note: insert '_Nullable' if the pointer may be null
                 FILE * __restrict) __DARWIN_ALIAS(freopen);
                      ^insert '_Nonnull' if the pointer should never be null
 FILE    *freopen(const char * __restrict, const char * __restrict,

 int      putc(int, FILE *);                        _Nullable                 FILE * __restrict) __DARWIN_ALIAS(freopen);

                        ^
                         _Nullable
                            ^
                              _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:249:23/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                      ^21: : note
 :248note: insert '_Nonnull' if the pointer should never be null
                        _Nonnullint      putc(int, FILE *);:
 51: warning: : insert '_Nonnull' if the pointer should never be null

                        ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                 FILE * __restrict) __DARWIN_ALIAS(freopen);FILE    *freopen(const char * __restrict, const char * __restrict,
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h248                                                     ^

                      ^:6::262:
                        _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:51: note: 
 22 insert '_Nullable' if the pointer may be null:warning 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: 248FILE    *freopen(const char * __restrict, const char * __restrict,:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 6int      puts(const char *);
 FILE    *freopen(const char * __restrict, const char * __restrict,:        ^

                                                     ^
                                                       _Nullable

                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:6: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: :insert '_Nullable' if the pointer may be null
 51pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :262:22: note: FILE    *freopen(const char * __restrict, const char * __restrict,
        ^insert '_Nullable' if the pointer may be null
 FILE    *freopen(const char * __restrict, const char * __restrict,
 : note: insert '_Nonnull' if the pointer should never be null

        ^
 FILE    *freopen(const char * __restrict, const char * __restrict,
                                                     ^
                                                       _Nonnullint      puts(const char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h          _Nullable :                         ^
                          _Nullable


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:248:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:262/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :248note249:23:: 22insert '_Nonnull' if the pointer should never be null: :warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] 
 6: 
 FILE    *freopen(const char * __restrict, const char * __restrict,
        ^
 notenote                 FILE * __restrict) __DARWIN_ALIAS(freopen);
                      ^: 
 : insert '_Nullable' if the pointer may be null          _Nonnull 
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:249:23/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: noteint      puts(const char *);
 250: insert '_Nullable' if the pointer may be null:18: warning                         ^
                          _Nonnull: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]


 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                     ^                 FILE * __restrict) __DARWIN_ALIAS(freopen);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:263:24: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]FILE    *freopen(const char * __restrict, const char * __restrict,
        ^
          _Nullable 


                      ^
                        _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 248int      remove(const char *);
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 249:23: 6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: note: insert '_Nonnull' if the pointer should never be null
 note: insert '_Nonnull' if the pointer should never be null
 FILE    *freopen(const char * __restrict, const char * __restrict,
        ^263:24                 FILE * __restrict) __DARWIN_ALIAS(freopen);

 : note          _Nonnull 
 : :250:18:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:18:                       ^insert '_Nullable' if the pointer may be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: 
                        _Nonnull
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);insert '_Nullable' if the pointer may be null

 int      remove(const char *);
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                     ^                           ^
 :                     ^

                       _Nullable

                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:18248:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: 250:263:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: 
 note: :FILE    *freopen(const char * __restrict, const char * __restrict,insert '_Nullable' if the pointer may be null18: note: 
 insert '_Nonnull' if the pointer should never be null24: note        ^

 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);int      remove(const char *);248:
                           ^
 6

 :                      ^
                       _Nullable
                            _Nonnull
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                     ^
                       _Nonnull
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250::18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 :264:25250FILE    *freopen(const char * __restrict, const char * __restrict,
 :43: :warning: warning        ^
          _Nullable  note: : 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                     ^
                       _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:248: 43: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                              ^

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :6: int      rename (const char *__old, const char *__new);int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                              ^
 note: insert '_Nonnull' if the pointer should never be null

                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:FILE    *freopen(const char * __restrict, const char * __restrict,/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:43:: note: 264:
        ^25250:
          _Nonnull 
 43: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: : noteinsert '_Nullable' if the pointer may be null: :
 250
 :18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                              ^
                                                _Nullable
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                              ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                     ^
 :250:int      rename (const char *__old, const char *__new);
                            ^
 43
 : note:                                                 _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                              _Nullable 
 insert '_Nonnull' if the pointer should never be null
 250:18: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                              ^
                                                _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:264
 ::250:43: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:251noteint      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                     ^
 :                        _Nullableinsert '_Nonnull' if the pointer should never be null
 :17: int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);

                                              ^
                                                _Nonnull25: 
 note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:251:1718: :int      rename (const char *__old, const char *__new); 
 note: 
                            ^
 insert '_Nonnull' if the pointer should never be null
                              _Nonnull int      fseek(FILE *, long, int);

                    ^warning: int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 264
 int      fseek(FILE *, long, int);:44: warning
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                     ^
                       _Nonnull
                    ^int      rename (const char *__old, const char *__new);
                                               ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:251:17: note: insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fseek(FILE *, long, int);
                    ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::250251:17: 
 note: :                     _Nullableinsert '_Nullable' if the pointer may be null
 :43264:44int      fseek(FILE *, long, int);
                    ^:

                     _Nullable
 : warning /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:251: note: insert '_Nullable' if the pointer may be null
 :17pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      rename (const char *__old, const char *__new);: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :: 251int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);

                                              ^
                                               ^
                                                 _Nullable 
 :17: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::insert '_Nonnull' if the pointer should never be null
 250264int      fseek(FILE *, long, int);
                    ^::note: 44:insert '_Nonnull' if the pointer should never be null 43:
 note                      _Nonnull
 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252insert '_Nonnull' if the pointer should never be null
 int      fseek(FILE *, long, int);:
 int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                              ^
 19
 : warning                                                _Nullableint      rename (const char *__old, const char *__new);
                                               ^                    ^

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                     _Nonnull
 int      fsetpos(FILE *, const fpos_t *);
                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:250:43: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                                 _Nonnull 
 :19insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 : note: int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                              ^
 :265:insert '_Nullable' if the pointer may be null
 19: warning:                                                 _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 252:19: warningvoid     rewind(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fsetpos(FILE *, const fpos_t *);
 :
                     ^
 :                       ^
                       _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 265:19: int      fsetpos(FILE *, const fpos_t *);
                      ^note: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h251:17/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252: insert '_Nullable' if the pointer may be nullwarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:
 252
 void     rewind(FILE *);
                     ^
                      _Nullable
 :19int      fseek(FILE *, long, int);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                    ^
 : note265/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: ::insert '_Nonnull' if the pointer should never be null
 19: 251int      fsetpos(FILE *, const fpos_t *);
                      ^
 :                       _Nonnull:17note19: 
 : note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :insert '_Nonnull' if the pointer should never be nullnote: 
 insert '_Nullable' if the pointer may be null252:
 35: warning: : int      fseek(FILE *, long, int);
 void     rewind(FILE *);
                     ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                      _Nonnullint      fsetpos(FILE *, const fpos_t *);insert '_Nullable' if the pointer may be null
                    ^
                                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                     _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252int      fsetpos(FILE *, const fpos_t *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:251::3517::                      ^ note:  :266:23insert '_Nonnull' if the pointer should never be null
 :noteint      fseek(FILE *, long, int);
                    ^
 warning: : 
 insert '_Nullable' if the pointer may be null
                       _Nullable                     _Nonnullint      fsetpos(FILE *, const fpos_t *);
                                      ^

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      scanf(const char * __restrict, ...) __scanflike(1, 2);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                                       _Nullable

                          ^
 :252:19: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      fsetpos(FILE *, const fpos_t *);:252/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                      ^
 19252:266:                       _Nonnull: warning23:: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:35
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note int      fsetpos(FILE *, const fpos_t *);
 :                      ^252:35
 : warning: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be nullnote:252: insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:19:
 int      scanf(const char * __restrict, ...) __scanflike(1, 2); note: 
 insert '_Nullable' if the pointer may be nullint      fsetpos(FILE *, const fpos_t *);                          ^

 int      fsetpos(FILE *, const fpos_t *);

                                      ^

                            _Nullable                                      ^int      fsetpos(FILE *, const fpos_t *);

                                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252:35:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 : 253note                      ^:266
                       _Nullable
 :23: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 note:int      fsetpos(FILE *, const fpos_t *);252: insert '_Nonnull' if the pointer should never be null:
 :19: note:                                       ^
                                       _Nullable18insert '_Nonnull' if the pointer should never be null
 : 
 warningint      fsetpos(FILE *, const fpos_t *);
                      ^

                       _Nonnull
 int      scanf(const char * __restrict, ...) __scanflike(1, 2);: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::
 252:long     ftell(FILE *);252:35
 :35                          ^ warning: 

 :                            _Nonnull
 note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 int      fsetpos(FILE *, const fpos_t *);
                                      ^
                    ^
 int      fsetpos(FILE *, const fpos_t *);
                                      ^
                                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:252:35:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :note253267:: 18:: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:long     ftell(FILE *);int      fsetpos(FILE *, const fpos_t *);
 253
 :18:                    ^                                      ^
                                       _Nullable note: 
 19
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     setbuf(FILE * __restrict, char * __restrict);
 long     ftell(FILE *);
                    ^::253:18: 252:note
                     _Nullable
                     ^
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:253:long     ftell(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 35                    ^:267:18
 :19:: note:                      _Nullable
 insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null
 void     setbuf(FILE * __restrict, char * __restrict);
 int      fsetpos(FILE *, const fpos_t *);
                                      ^
                                       _Nonnull
 note: insert '_Nonnull' if the pointer should never be null                     ^
                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:253253:18:18:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 267long     ftell(FILE *);
 ::                    ^
                     _Nonnull 
 19:  note: warningnote: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :long     ftell(FILE *);
                    ^
 insert '_Nonnull' if the pointer should never be null

 long     ftell(FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     setbuf(FILE * __restrict, char * __restrict);
                     ^
                       _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                    ^
 253:267:254:27: 38: warning                     _Nonnull
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     setbuf(FILE * __restrict, char * __restrict);
                                        ^
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267:254size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                           ^
 :27: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h38: ::18:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 254:27 note: size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                           ^insert '_Nullable' if the pointer may be null

 long     ftell(FILE *);
 note: insert '_Nullable' if the pointer may be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254 
 note: :insert '_Nullable' if the pointer may be null                    ^
 void     setbuf(FILE * __restrict, char * __restrict);
                                        ^27: 

                                          _Nullable
                     _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: 267                           ^::insert '_Nullable' if the pointer may be null
 253:18:38: note
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite); :                              _Nullablenote: insert '_Nonnull' if the pointer should never be null

 insert '_Nonnull' if the pointer should never be null
 long     ftell(FILE *);
                    ^
                     _Nonnull
 void     setbuf(FILE * __restrict, char * __restrict);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:27:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:27 
                           ^
                             _Nullable                                        ^
                                          _Nonnullnote: insert '_Nonnull' if the pointer should never be null:
 warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268:19: warning: size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                           ^
                             _Nonnull

 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

 :254:int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                      ^84254:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 27: note: 268:254insert '_Nonnull' if the pointer should never be null19:size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);:
 note: 
 insert '_Nullable' if the pointer may be null
                                                                                    ^
 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                      ^
                        _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                           ^
                             _Nonnull254:84:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 26827:  /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note: note254:: insert '_Nullable' if the pointer may be null84:
 19: insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                                                                                    ^
                                                                                      _Nullable
 : int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                      ^
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);warning                        _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                           ^
                             _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:27: note: insert '_Nonnull' if the pointer should never be null
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                           ^
                             _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h254size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);

 ::                                                                                    ^
 254/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h84:::84/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:: warning268 84: note: insert '_Nullable' if the pointer may be null: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note
 : insert '_Nonnull' if the pointer should never be null
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                                                                                    ^
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                                                                                    ^
                                                                                      _Nullable
 :38: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:254:size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);84:
 :254:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 84:                                                                                     ^note:  note: insert '_Nullable' if the pointer may be nullint      setvbuf(FILE * __restrict, char * __restrict, int, size_t);insert '_Nonnull' if the pointer should never be null


                                         ^
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                                                                                    ^
 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                                                                                      _Nonnull                                                                                      _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268:                                                                                    ^
                                                                                      _Nullable38
 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:255:16: int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                                         ^
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:255:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      getc(FILE *);
                   ^
 16::254 warning: :84: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: :255:
 insert '_Nonnull' if the pointer should never be null16: 
 note: 
 insert '_Nullable' if the pointer may be nullint      getc(FILE *);

 size_t   fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);                   ^

                                                                                    ^
 int      getc(FILE *);
                   ^
                    _Nullable                                                                                      _Nonnull
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:255:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h16: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nullable' if the pointer may be null:255:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h268:1638: note: 
 :255:: warningint      getc(FILE *);
                   ^: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 16int      getc(FILE *);
                   ^

                    _Nullable
 : note: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 int      getc(FILE *);
                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                                         ^
                    _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 ::255:16/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257255                                           _Nonnull:17: 
 : notewarning: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h16: :269::pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] 19: warningnote
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 : insert '_Nullable' if the pointer may be null
 char    *gets(char *);
 int      getc(FILE *);int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");int      getc(FILE *);
                   ^                   ^

                   ^
                    _Nullable
                    _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257:17
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::17:                      ^
 255:16: note:  note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269: warning: : insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be nullint      getc(FILE *);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 char    *gets(char *);                   ^:19
 char    *gets(char *);                   ^


                    _Nonnull
                   ^
                    _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257:17: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:17:257: note: : : note: 17: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be nullchar    *gets(char *);
                   ^
                    _Nullable
 warning
 char    *gets(char *);
                   ^insert '_Nullable' if the pointer may be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 char    *gets(char *);
                   ^                    _Nonnull
 257
 :17:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :257257:                      ^
 17:                        _Nullable
 note: :6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 char    *gets(char *);char    *gets(char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
        ^
 :269
                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                    _Nullable
 : note: 257:insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::6:257:19: 17:
 char    *gets(char *);
 note note: note: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be null                   ^: 
                    _Nonnull

 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257:6char    *gets(char *);
                   ^
                    _Nonnull
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257warningint      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");: char    *gets(char *);:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 6: 
                      ^
 char    *gets(char *);
        ^
 warning:                         _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :257
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :char    *gets(char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269:        ^
          _Nullable 44
        ^
 6: note: insert '_Nullable' if the pointer may be null

 char    *gets(char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257:6: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *gets(char *);
 :: 257:6warning:        ^:          ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]


          _Nullable 
          _Nullable 
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257:6: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:257note: insert '_Nonnull' if the pointer should never be null:char    *gets(char *);
        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:6: note: 

 269:44:char    *gets(char *);
 insert '_Nonnull' if the pointer should never be null
          _Nonnull char    *gets(char *);
        ^

          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:258note        ^
          _Nonnull :25: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     perror(const char *);
                           ^
 : insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:258:25: note: insert '_Nullable' if the pointer may be nullint      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:258::25: warning: 258
                                               ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:25:
                                                 _Nullable
 warning: 
 void     perror(const char *);
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                            _Nullablevoid     perror(const char *);void     perror(const char *);


 :44                           ^                           ^:

 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:258int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");258
                                               ^
                                                 _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:25: note: :258:insert '_Nullable' if the pointer may be null
 25: note: insert '_Nonnull' if the pointer should never be null
 void     perror(const char *);
 :25: notevoid     perror(const char *);                           ^
                            _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 270: 
 insert '_Nullable' if the pointer may be null
                           ^
                            _Nonnull
 void     perror(const char *);
 :24: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]259:258:2425:
 :  note:                            ^
                            _Nullable
 warning: int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 258:
                           ^
 insert '_Nonnull' if the pointer should never be null25: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:24notevoid     perror(const char *);: note: : insert '_Nonnull' if the pointer should never be null

                           ^insert '_Nullable' if the pointer may be null

                            _Nonnullint      printf(const char * __restrict, ...) __printflike(1, 2);int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);

                           ^
 void     perror(const char *);
                           ^
                             _Nullable
                           ^
                            _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :259::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h24: :259:259:24:
 warning: note: 24pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 int      printf(const char * __restrict, ...) __printflike(1, 2);:270:
 int      printf(const char * __restrict, ...) __printflike(1, 2);
 : warning                           ^
                             _Nullable: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                           ^

 int      printf(const char * __restrict, ...) __printflike(1, 2);
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:259:24/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:24::259 :24:note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h : insert '_Nonnull' if the pointer should never be null
 :259:24: notenote:  : insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be nullnote: insert '_Nullable' if the pointer may be nullint      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                           ^
                             _Nonnull


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:49:int      printf(const char * __restrict, ...) __printflike(1, 2);int      printf(const char * __restrict, ...) __printflike(1, 2); warning: 
                           ^
                             _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                           ^
                             _Nonnull
 int      printf(const char * __restrict, ...) __printflike(1, 2);
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260:21:
                                                    ^
 259:24
                             _Nullable
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::259:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      putc(int, FILE *);
 :24:note270 :                        ^
 49: : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260int      printf(const char * __restrict, ...) __printflike(1, 2);note: :21:note: insert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null 
 note: 
 insert '_Nullable' if the pointer may be null

 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                                    ^
                                                      _Nullable
 int      printf(const char * __restrict, ...) __printflike(1, 2);                           ^
                             _Nonnull
 int      putc(int, FILE *);

                        ^
                         _Nullable
                           ^
                             _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:49: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260:insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260:21:21:  int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                                    ^note: insert '_Nonnull' if the pointer should never be nullwarning: 
 :
                                                      _Nonnullint      putc(int, FILE *);
                        ^
                         _Nonnull

 260:21: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:262/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271:6: :22:warningwarning : warning: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      puts(const char *);int      putc(int, FILE *);

                        ^FILE    *tmpfile(void);

        ^
                         ^
 int      putc(int, FILE *);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271:6: note: insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *tmpfile(void);
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        ^260:21: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: insert '_Nullable' if the pointer may be null:262:22: note: 
          _Nullable 
 insert '_Nullable' if the pointer may be null

 int      puts(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271int      putc(int, FILE *);260
 :                        ^
                         ^:21:
                         _Nullable
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260
                          _Nullable
 6: int      putc(int, FILE *);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                         _Nullablenote262
 :: 22:insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:260:21: :21 note: 
 noteFILE    *tmpfile(void);:: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null int      putc(int, FILE *);note


 : insert '_Nonnull' if the pointer should never be null
                        ^int      putc(int, FILE *);
                        ^
 int      puts(const char *);

                         _Nonnull
                         _Nonnull
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:262:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:263:24:: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]262:
        ^
 22          _Nonnull 
 22int      remove(const char *);
 :: warning                            ^warning: 
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:263
 :24:
 :19: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      puts(const char *);int      puts(const char *);
 
                         ^

                         ^
 note: insert '_Nullable' if the pointer may be null
 char    *tmpnam(char *);
                     ^
 int      remove(const char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                           ^262:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :22: note: insert '_Nullable' if the pointer may be null                            _Nullable
 :277:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:263int      puts(const char *);
                         ^
 262:22                          _Nullable:19:24:
 : note:  note:  insert '_Nullable' if the pointer may be null
 note: int      puts(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null
 :262int      remove(const char *);
 :22                         ^

                           ^
                            _Nonnull
 insert '_Nullable' if the pointer may be null
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:264:25char    *tmpnam(char *);
                     ^: warning:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note:262:
 int      rename (const char *__old, const char *__new);
                      _Nullable
                            ^
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277:19int      puts(const char *);
                         ^
                          _Nonnull22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 ::: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null
 264char    *tmpnam(char *);
                     ^:263:25: note: insert '_Nullable' if the pointer may be null

 24:int      rename (const char *__old, const char *__new);
                            ^
                              _Nullable  note:                       _Nonnull

 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277:6: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      puts(const char *);
 :264                         ^
                          _Nonnull:char    *tmpnam(char *); 25warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 : noteint      remove(const char *);
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: insert '_Nonnull' if the pointer should never be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h263
 :        ^

 :24: warning: int      rename (const char *__old, const char *__new);263/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :                            ^:277:
 24                              _Nonnull pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]6: 
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: : 
 noteint      remove(const char *);:: 264
 :                           ^insert '_Nullable' if the pointer may be null44
 : warning
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]char    *tmpnam(char *);
        ^
          _Nullable insert '_Nullable' if the pointer may be null

 int      remove(const char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:263:24:int      rename (const char *__old, const char *__new);
 note: insert '_Nullable' if the pointer may be null                           ^
                            _Nullable

                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277:6: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *tmpnam(char *);
        ^
          _Nonnull 
 :int      remove(const char *);

 264:44:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:263                           ^ /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 note:: :278                            _Nullable:23: warning: 
 insert '_Nullable' if the pointer may be null24pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :263:24

 note: insert '_Nonnull' if the pointer should never be null
 int      ungetc(int, FILE *);int      rename (const char *__old, const char *__new);int      remove(const char *);
                           ^

 :                           ^                            _Nonnullnote: 
                                               ^
 insert '_Nonnull' if the pointer should never be null

 int      remove(const char *);
                           ^
                            _Nonnull

                                                 _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:264:25: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:278:23: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note:264: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:int      ungetc(int, FILE *);
                          ^
                           _Nullable
 264:
 44: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:278int      rename (const char *__old, const char *__new);:insert '_Nonnull' if the pointer should never be null
 25
 : warning:                             ^int      rename (const char *__old, const char *__new);
                                               ^

                                                 _Nonnull 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:264:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:265:1923::25 :int      rename (const char *__old, const char *__new);  note: insert '_Nonnull' if the pointer should never be nullwarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]


 noteint      ungetc(int, FILE *);
                          ^
                           _Nonnull
 void     rewind(FILE *);:                             ^insert '_Nullable' if the pointer may be null


                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      rename (const char *__old, const char *__new);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h264:265:19: :279:20: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:25
 : notenote: insert '_Nullable' if the pointer may be nullint      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);: 

                       ^
 void     rewind(FILE *);
                     ^                            ^insert '_Nullable' if the pointer may be null


                      _Nullable
 int      rename (const char *__old, const char *__new);
                            ^
                              _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279:20:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note: 264:25: :note: insert '_Nonnull' if the pointer should never be null265:19: note

 insert '_Nullable' if the pointer may be null
 :                               _Nullable int      rename (const char *__old, const char *__new);insert '_Nonnull' if the pointer should never be null
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);


                            ^
                              _Nonnull 
                       ^
                         _Nullable
 void     rewind(FILE *);
                     ^
                      _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 264:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:264::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:266:23:4425 warning279:20: note: : note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 : insert '_Nonnull' if the pointer should never be null
 int      scanf(const char * __restrict, ...) __scanflike(1, 2);
                          ^
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 int      rename (const char *__old, const char *__new);:                       ^
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                         _Nonnull
 int      rename (const char *__old, const char *__new);
 266/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                               ^:23: 
 279:45: warningnote: insert '_Nullable' if the pointer may be null: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:264:44int      scanf(const char * __restrict, ...) __scanflike(1, 2);
                          ^                            ^
                              _Nonnull 
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

                            _Nullable                                                ^
 :
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279:45:: 264int      rename (const char *__old, const char *__new);note: 
                                               ^
 insert '_Nullable' if the pointer may be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:266                                                 _Nullable int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 :2344: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      rename (const char *__old, const char *__new);

 :264                                               ^
 note:                                                 ^
                                                  _Nullable
 insert '_Nonnull' if the pointer should never be null
 :44: note: int      scanf(const char * __restrict, ...) __scanflike(1, 2);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                          ^
 264:                            _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 insert '_Nonnull' if the pointer should never be null
 44: note: insert '_Nullable' if the pointer may be null
 int      rename (const char *__old, const char *__new);
                                               ^
                                                 _Nonnull 
 int      rename (const char *__old, const char *__new);
 :279/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                               ^
                                                 _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::267:265:
 :191945: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::: warning:  warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 264:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 44void     rewind(FILE *);void     setbuf(FILE * __restrict, char * __restrict);: 
                     ^
 :insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:265
                     ^
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                ^
                                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267note: insert '_Nonnull' if the pointer should never be null
 :19: note: insert '_Nullable' if the pointer may be null
 :int      rename (const char *__old, const char *__new);void     setbuf(FILE * __restrict, char * __restrict);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                     ^
                       _Nullable
 :19:                                               ^280 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                                                 _Nonnull 
 267:19: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::25notevoid     setbuf(FILE * __restrict, char * __restrict);:
                     ^
                       _Nonnull
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 265::38:int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                            ^19 
 warning: : insert '_Nullable' if the pointer may be null:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:280:25: note: void     setbuf(FILE * __restrict, char * __restrict);void     rewind(FILE *);insert '_Nullable' if the pointer may be null

                                        ^
 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267:
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                     ^
                      _Nullable
 38                              _Nullable
 : note: void     rewind(FILE *);
 insert '_Nullable' if the pointer may be null

                     ^
 void     setbuf(FILE * __restrict, char * __restrict);
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:265                                          _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 ::280:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h2519: note: :267:38:: insert '_Nonnull' if the pointer should never be null
 :265:19int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
 :note:  note: insert '_Nullable' if the pointer may be null
                            ^
                              _Nonnullinsert '_Nonnull' if the pointer should never be null
 void     rewind(FILE *);
                     ^ note: void     setbuf(FILE * __restrict, char * __restrict);

                                        ^
                                          _Nonnull
 insert '_Nonnull' if the pointer should never be null
 void     rewind(FILE *);
                     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281
 ::
                      _Nonnull
 268:20/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:266:19: warning:  warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :23:int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);

 warning:                       ^
                      _Nullable
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                       ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:265/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::19:268:19pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]281:: note 
 : 20:insert '_Nullable' if the pointer may be nullnoteint      scanf(const char * __restrict, ...) __scanflike(1, 2);: 
 note: insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null
 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                          ^
 void     rewind(FILE *);
                     ^
                      _Nonnull

                      ^
                        _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
 266                       ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:266:268:19: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null281:20: 
 23: noteint      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
 :: 23: note: insert '_Nullable' if the pointer may be null
                      ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nonnull' if the pointer should never be null
 int      scanf(const char * __restrict, ...) __scanflike(1, 2);
                          ^

                        _Nonnull
                            _Nullableint      scanf(const char * __restrict, ...) __scanflike(1, 2);
                          ^int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");

                       ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268:38:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:266:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                         _Nonnull
 :266
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:4523: int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);:note: 
                                         ^:
 insert '_Nonnull' if the pointer should never be null warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h23
 :268:38int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");int      scanf(const char * __restrict, ...) __scanflike(1, 2);:
                                                ^
 note: 
                          ^: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nullable' if the pointer may be null
 281:45int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                            _Nonnull

                                         ^note: insert '_Nullable' if the pointer may be null: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267
                                           _Nullable
 :insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268:38: noteint      scanf(const char * __restrict, ...) __scanflike(1, 2);19: insert '_Nonnull' if the pointer should never be null: warning
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");: 
 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                         ^
                                           _Nonnull
 void     setbuf(FILE * __restrict, char * __restrict);

                     ^                          ^
                            _Nullable
                                                ^
                                                  _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:266:23: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281note: insert '_Nonnull' if the pointer should never be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 26945: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      scanf(const char * __restrict, ...) __scanflike(1, 2);:267:
 : 19                          ^:19: :
                            _Nonnull
 noteinsert '_Nonnull' if the pointer should never be nullwarning: 
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267:19: warning: int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");insert '_Nullable' if the pointer may be null
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                      ^
 void     setbuf(FILE * __restrict, char * __restrict);
                     ^
 void     setbuf(FILE * __restrict, char * __restrict);
                     ^
                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:19:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note:267: :insert '_Nullable' if the pointer may be null
                                                ^19:
                                                  _Nonnull
 : int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
 note267:                      ^
                        _Nullable19: 
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 297:20:: void     setbuf(FILE * __restrict, char * __restrict);:269
 : 19                     ^warning
 insert '_Nullable' if the pointer may be null
 : note                       _Nonnullvoid     setbuf(FILE * __restrict, char * __restrict);
 : insert '_Nonnull' if the pointer should never be null: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267

                     ^
                       _Nullable:38: 
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                      ^
                        _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:267/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269:char    *ctermid(char *);
                      ^:19: note: insert '_Nonnull' if the pointer should never be null
 44warningvoid     setbuf(FILE * __restrict, char * __restrict);

 :: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                     ^
                       _Nonnull
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :297/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269void     setbuf(FILE * __restrict, char * __restrict);:20:
                                        ^
 44: note: insert '_Nullable' if the pointer may be null
 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null:int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");

 267char    *ctermid(char *);
 267:38: :                                               ^warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]38                      ^

                       _Nullable
 : void     setbuf(FILE * __restrict, char * __restrict);
                                        ^

 note:                                                  _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297:20: :267:note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: 38insert '_Nonnull' if the pointer should never be null
 void     setbuf(FILE * __restrict, char * __restrict);
 :269:: notechar    *ctermid(char *);
 44                      ^
                                        ^
                                          _Nullable
 : note: : insert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :267:38:                        _Nonnull
 noteint      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                               ^void     setbuf(FILE * __restrict, char * __restrict);

                                                 _Nonnull
                                        ^297:6::  warning: insert '_Nonnull' if the pointer should never be null
                                          _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:24pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]void     setbuf(FILE * __restrict, char * __restrict);: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 : 267:38char    *ctermid(char *);
        ^

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297:6:: note: insert '_Nonnull' if the pointer should never be null
 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);void     setbuf(FILE * __restrict, char * __restrict);
                            ^                                          _Nonnull


                                        ^
                                          _Nonnullnote/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270: insert '_Nullable' if the pointer may be null:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h24char    *ctermid(char *);::268:
 note: 
 19insert '_Nullable' if the pointer may be null        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268:int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3); :19:
 warning 
                           ^warning          _Nullable 

 : :                              _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                      ^:int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);:270
                      ^

 :24: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268:19: note: insert '_Nullable' if the pointer may be null
 297:int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                      ^
                        _Nullable6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note: insert '_Nonnull' if the pointer should never be null
 :char    *ctermid(char *);268

        ^
                           ^
 :19: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: insert '_Nullable' if the pointer may be null                             _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270
          _Nonnull 
 :49::268:int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hwarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :                      ^
                        _Nullable
 19: int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301                                                    ^268int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                      ^

 ::19                        _Nonnull30: note: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: warning270:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 49: noteFILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                      ^: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268
 insert '_Nullable' if the pointer may be null:                                ^

 38: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                        _Nonnull
 :301int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                                         ^
 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 :30:                                                    ^
                                                      _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 268:38: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 270noteint      setvbuf(FILE * __restrict, char * __restrict, int, size_t);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 49::: insert '_Nullable' if the pointer may be null
 note268:38: noteFILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));: 
 : insert '_Nullable' if the pointer may be null
                                         ^
 insert '_Nonnull' if the pointer should never be null
 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                                         ^
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:268:int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h38
 :                                                    ^                                 _Nullable

                                                      _Nonnull
 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:30: noteint      setvbuf(FILE * __restrict, char * __restrict, int, size_t);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271:6
 268:                                         ^
                                           _Nullable
 :38 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:: 268:38: note: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 FILE    *tmpfile(void);
        ^

 int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                                         ^
                                           _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));

 :                                ^note6
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269:int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
                                         ^ 
 :note: insert '_Nullable' if the pointer may be null                                 _Nonnull
 19: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                           _Nonnull


 FILE    *tmpfile(void);
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                      ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::271:6:269:
 :301:19: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]6 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note: insert '_Nonnull' if the pointer should never be null
 269:int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                      ^
 : 19:warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269FILE    *tmpfile(void);
        ^: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :19
          _Nonnull 
 : note: insert '_Nullable' if the pointer may be null
 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277:19: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                      ^char    *tmpnam(char *);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:6: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                        _Nullable
 note277:19/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 :: insert '_Nullable' if the pointer may be null
 269:19: note: insert '_Nonnull' if the pointer should never be null
 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
          _Nullable 
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                      ^
                        _Nullable: 
 note:                       ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                        _Nonnull
 19: noteinsert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: char    *tmpnam(char *);269:301
                     ^44: 
                      _Nullable
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null
 277:19:
 note: int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
 6int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");:insert '_Nonnull' if the pointer should never be null
                      ^
 char    *tmpnam(char *);

                        _Nonnull
                     ^
                      _Nonnull                                               ^

 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
          _Nonnull 
 :44: note:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:305:18: warning: : insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]269:44:
 277int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                                               ^
                                                 _Nullable
 warning: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:2696pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:
 : warning: int      fileno(FILE *);44: note: insert '_Nonnull' if the pointer should never be null
 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                                               ^
                     ^

 int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                                               ^
                                                 _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:char    *tmpnam(char *);
 269/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:24: warning:         ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]::
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277:44int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 : note6:                            ^
 note: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 305:char    *tmpnam(char *);270:18
        ^
          _Nullable 
 :: noteinsert '_Nullable' if the pointer may be null
 : 24: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
 note: :277:6: insert '_Nullable' if the pointer may be null
 int      fileno(FILE *);
 note: int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);                                               ^

 insert '_Nonnull' if the pointer should never be null
                                                 _Nullable
 char    *tmpnam(char *);
        ^
          _Nonnull 
                           ^
                             _Nullable                     ^
                      _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:269:44: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:24/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
                                               ^: note:: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                                                 _Nonnull278:23: warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                           ^
                             _Nonnull
 int      ungetc(int, FILE *);
                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:49: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                                    ^
 278:305/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:2423: note: :insert '_Nullable' if the pointer may be null
 18::int      ungetc(int, FILE *); note: : 270:49: note: insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null

                          ^

                           _Nullable
 int      fileno(FILE *);
 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                     ^
                      _Nonnull
 warning:                                                     ^
                                                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:49: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:278noteint      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                           ^: :insert '_Nonnull' if the pointer should never be null321

 23: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:18::270: int      ungetc(int, FILE *);warningint      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 24:                                                    ^: 

                                                      _Nonnull
                          ^
                           _Nonnull note: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");:271:
                     ^6
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 279:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be nullFILE    *tmpfile(void);20: warning:
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

        ^
 321:18: note: insert '_Nullable' if the pointer may be null
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                       ^
                           ^
                             _Nullable
 int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279:
 27120/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                     ^::6: note: insert '_Nullable' if the pointer may be null

 FILE    *tmpfile(void);
                      _Nullable
         ^
          _Nullable 
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:321:note27018:: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271:int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                       ^
 : note                         _Nullable
 : 6: 24: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 insert '_Nonnull' if the pointer should never be null
 :279:20: int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                     ^int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 note: insert '_Nonnull' if the pointer should never be null
 note
                      _Nonnull
 : insert '_Nonnull' if the pointer should never be null
                           ^
                             _Nonnull
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                       ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE    *tmpfile(void);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h270:        ^323279
          _Nonnull 
 :24: warning: ::pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277:19: 
 45: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]49: warning
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 : int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                                    ^                          ^
                                                ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:270:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]49:279:45
 ::323:char    *tmpnam(char *);24:
 note: insert '_Nullable' if the pointer may be null
                     ^
 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277:19: FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                          ^
                           _Nullable note: 
 noteint      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323                                                    ^insert '_Nullable' if the pointer may be null

                                                      _Nullable:24: int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);

                                                ^insert '_Nullable' if the pointer may be null

                                                  _Nullable
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *tmpnam(char *);: insert '_Nonnull' if the pointer should never be null

                     ^:270:49: note: insert '_Nonnull' if the pointer should never be null
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);279                      _Nullable

                          ^
                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::277:19:                                                     ^
                                                      _Nonnullnote: insert '_Nonnull' if the pointer should never be null
 :32345char    *tmpnam(char *);
 ::38: note:  
                     ^insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning

                      _Nonnull
 271/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 :6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 :6: char    *tmpnam(char *);warning: 
                                                ^
        ^
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                        ^
 FILE    *tmpfile(void);
        ^
                                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:38: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note: 280:insert '_Nullable' if the pointer may be null25
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nullable' if the pointer may be null:277
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *tmpfile(void);
        ^
          _Nullable 
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                                        ^
                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:271:                            ^:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h66:: 
 note: 323:38:insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: note:  280insert '_Nonnull' if the pointer should never be nullnote: 
 :insert '_Nullable' if the pointer may be null
 25: notechar    *tmpnam(char *);
        ^: 

 insert '_Nullable' if the pointer may be nullFILE    *tmpfile(void);
          _Nullable 
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                                        ^

 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);                                         _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:        ^277

 :6:                             ^
 note:           _Nonnull                               _Nullable


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::280insert '_Nonnull' if the pointer should never be null
 277char    *tmpnam(char *);
 :        ^6:
 : warning: 25pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]19:
 note: warning:           _Nonnull : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 insert '_Nonnull' if the pointer should never be null
 char    *tmpnam(char *);
                     ^
 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                            ^
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                              _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:        ^
 278:23: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:20:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h277: 19: note:323:: 6: noteinsert '_Nullable' if the pointer may be nullwarning: 
 insert '_Nullable' if the pointer may be null
 warning: char    *tmpnam(char *);: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                     ^
                      _Nullable

 int      ungetc(int, FILE *);int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                       ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:277FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281
                          ^
        ^
 :20::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h19 ::          _Nullable 
 note278 note: insert '_Nonnull' if the pointer should never be null: insert '_Nullable' if the pointer may be null
 :
 23:char    *tmpnam(char *);int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                       ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                     ^ /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h323::note6: note: 281:
                      _Nonnull
 insert '_Nonnull' if the pointer should never be null20/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :: insert '_Nullable' if the pointer may be null note: 
 :277:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be nullFILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
        ^char    *tmpnam(char *);

        ^

          _Nonnull 
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                       ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:342
                         _Nonnull
 int      ungetc(int, FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:45:                          ^277
 ::18 :                            _Nullablewarning6
 warning: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int     __srget(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:278:23: :
 note: insert '_Nonnull' if the pointer should never be null                     ^
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead."); note: 

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      ungetc(int, FILE *);
 :                                                ^                          ^insert '_Nullable' if the pointer may be null
 342:
 18: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                           _Nonnull
 281:insert '_Nullable' if the pointer may be null
 45char    *tmpnam(char *);int     __srget(FILE *);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 279:                      _Nullable
 20:note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:342:insert '_Nullable' if the pointer may be null
 18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] 
 note: insert '_Nonnull' if the pointer should never be null
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");        ^

          _Nullable 
                                                ^
                                                  _Nullable
 int     __srget(FILE *);
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                       ^                     ^
                      _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:45: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: 
 :277:insert '_Nonnull' if the pointer should never be null
 6: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");insert '_Nonnull' if the pointer should never be null
 :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                                ^
                                                  _Nonnull
 :343:21char    *tmpnam(char *);
 20:        ^: note: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:          _Nonnull 
 297:20: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: insert '_Nullable' if the pointer may be null
 char    *ctermid(char *);
                      ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                       ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :278:23::int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0); 
 297:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                        ^
 20:                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343note: insert '_Nullable' if the pointer may be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :279:20: int      ungetc(int, FILE *);21

                          ^:char    *ctermid(char *);

                      ^ note: 
                       _Nullable
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:278:23: notenoteint     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :                        ^: 297insert '_Nullable' if the pointer may be null
 :
 20:insert '_Nonnull' if the pointer should never be nullint      ungetc(int, FILE *);
                         _Nullable                          ^ note: insert '_Nonnull' if the pointer should never be null

 char    *ctermid(char *);


                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:21                      ^int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                       ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:278
                         _Nonnull

                       _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:::23 note: 279:45297insert '_Nonnull' if the pointer should never be null: warning
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: note: insert '_Nonnull' if the pointer should never be null
 :6:int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
 
 warning                                                ^                        ^
                         _Nonnull

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 char    *ctermid(char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:        ^:
 279:45int      ungetc(int, FILE *);
 343::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h35:                          ^
 :                            _Nonnull
 297:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h6:
 : note:  note: int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                                      ^insert '_Nullable' if the pointer may be null
 insert '_Nullable' if the pointer may be null
 279:20: int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343char    *ctermid(char *);
 :35:         ^

 note: insert '_Nullable' if the pointer may be null          _Nullable 

 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                       ^
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                                                  _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279                                      ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::279
 :297:20: note: :insert '_Nullable' if the pointer may be null45                                       _Nullable
 6: 
 note: : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);

 :343:notechar    *ctermid(char *);
        ^
          _Nonnull 
                       ^
                         _Nullable: insert '_Nonnull' if the pointer should never be null35:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301
 :30: note: int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                ^
                                                  _Nonnull

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:280:FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));2025: warning: 
                                ^
 insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);:int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
 :301
                                      ^
 note                            ^
 :                                       _Nonnull
 30: note: insert '_Nullable' if the pointer may be null
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:344:23FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);: warning

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:280                                ^
                                 _Nullable                       ^
                         _Nonnull
 :
 25: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: insert '_Nullable' if the pointer may be null
 :279:int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                            ^
                              _Nullable301: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 :int     __swbuf(int, FILE *);
                          ^30:45/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: ::280:25 warning: notenote: insert '_Nonnull' if the pointer should never be null: 
 : insert '_Nonnull' if the pointer should never be null

 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                            ^
                              _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:344:23: note: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
                                ^
                                 _Nonnull
 int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:20: warninginsert '_Nullable' if the pointer may be null
 :45int     __swbuf(int, FILE *);
 :: 301 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :6note: insert '_Nullable' if the pointer may be null                          ^int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
 : 
                           _Nullable
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                ^
                                                  _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:344

                       ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:279:45: FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);281:6:
 20:                                                 ^note: :: 
                                                  _Nonnull
 insert '_Nullable' if the pointer may be nullnote: 
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                       ^23
          _Nullable 
 : note: 
                         _Nullable
 280:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h25:281: warning: :301:620: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note: note: 
 insert '_Nonnull' if the pointer should never be null
 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                            ^int     __swbuf(int, FILE *);
 :                           ^insert '_Nonnull' if the pointer should never be null


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:280:25:FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                       ^
                         _Nonnull
        ^
          _Nonnull 
 note
                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:45: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:305/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:353: insert '_Nullable' if the pointer may be null:49: 
 :18warningint      vprintf(const char * __restrict, va_list) __printflike(1, 0);
 :                             ^: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      fileno(FILE *);
                              _Nullablewarning:                      ^int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                                ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:305:18: note: __header_always_inline int __sputc(int _c, FILE *_p) {insert '_Nullable' if the pointer may be null

 int      fileno(FILE *);
                     ^
                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::281:45:                       _Nullable
 note: 
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:305:18:280: noteint      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");25: note: : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be nullint      fileno(FILE *);

                                                ^
                     ^
                      _Nonnull
 int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                            ^
                                                  _Nullable
 353:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:321:18: warning49:
                              _Nonnull: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281 note: :45: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 281:20: warninginsert '_Nullable' if the pointer may be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");__header_always_inline int __sputc(int _c, FILE *_p) {

                     ^
 note: insert '_Nonnull' if the pointer should never be null
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");

 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                                                ^
                                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:321                       ^
 :18: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:20: int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                                                ^note297
                                                  _Nullable 
 :                      ^:insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:353:49                      _Nullable20int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
 : warning: 
                       ^
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:321                         _Nullable
 :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 18: char    *ctermid(char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: :insert '_Nonnull' if the pointer should never be null281:20: note: insert '_Nonnull' if the pointer should never be null

 note: insert '_Nonnull' if the pointer should never be null
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                       ^
                         _Nonnull
                      ^__header_always_inline int __sputc(int _c, FILE *_p) {
 int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                                                ^                     ^


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                      _Nonnull
 :281:45: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hwarning                                                  _Nonnull 
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :323:24: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 :45: 297:20: note: insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
                          ^
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
                                                ^
                                                  _Nullablechar    *ctermid(char *);
                      ^
                       _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:281:20::323 note: insert '_Nonnull' if the pointer should never be null
 :24:char    *ctermid(char *);
 45                      ^
                       _Nonnullnote: : note: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");

                                                ^
                                                  _Nonnull
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                          ^
                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297:20: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:24: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379:insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 22: char    *ctermid(char *);
 warningchar    *ctermid(char *);
        ^                      ^
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297:20: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297::                           ^
                           _Nonnullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]6
 note: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: notevoid     flockfile(FILE *);
 323:38: warning:                         ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 insert '_Nullable' if the pointer may be null
 char    *ctermid(char *);
                      ^
                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379:22: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note: insert '_Nullable' if the pointer may be nullinsert '_Nullable' if the pointer may be null
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");char    *ctermid(char *);
        ^


                                        ^
 297:20void     flockfile(FILE *);
                        ^          _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323
 ::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297:
 note                         _Nullable38: 
 note6: : insert '_Nonnull' if the pointer should never be null: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379note: insert '_Nonnull' if the pointer should never be null
 :22: note: FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                                        ^char    *ctermid(char *);

 insert '_Nonnull' if the pointer should never be null
                                         _Nullable        ^void     flockfile(FILE *);



          _Nonnull 
 char    *ctermid(char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:                        ^                      ^
                       _Nonnull
 38/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:297:6: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null301
 ::30:
  warning: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                         _NonnullFILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]


                                        ^
                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:char    *ctermid(char *);FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));380
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :24323:6                                ^
 :         ^
 : warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      ftrylockfile(FILE *);
                           ^
 301:30: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:380:24: note: insert '_Nullable' if the pointer may be null
 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
 297                                ^
 :FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");int      ftrylockfile(FILE *);6: 
 note                                 _Nullable
 :         ^
                           ^

                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:30:insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note: insert '_Nonnull' if the pointer should never be null
 char    *ctermid(char *);
        ^323FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));:

          _Nullable 6:                                ^
 : note: insert '_Nullable' if the pointer may be null

 380:                                 _Nonnull
 24: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:int      ftrylockfile(FILE *);
                           ^
 297:6                            _NonnullFILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");:
 6: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h 
 :381:note: insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]24:char    *ctermid(char *);
        ^        ^


          _Nonnull 
          _Nullable 
 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:30: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h :323/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::6: warningnote: warning: 301pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nonnull' if the pointer should never be null

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void     funlockfile(FILE *);
                          ^:FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");

        ^
                                ^
 6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:381:24: :note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: 
 note: insert '_Nullable' if the pointer may be null
          _Nonnull 301insert '_Nullable' if the pointer may be null

 void     funlockfile(FILE *);
                          ^FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
 :
                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:          _Nullable 
 342:18: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:381:24:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 30: note: insert '_Nullable' if the pointer may be nullint     __srget(FILE *);
 6:                      ^
 : note
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:void     funlockfile(FILE *);noteFILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));

 : 342                          ^:insert '_Nonnull' if the pointer should never be null
 18: note: insert '_Nullable' if the pointer may be null                                ^FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
          _Nonnull 
                           _Nonnull


                                 _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:305:18:
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int     __srget(FILE *);
                     ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]382:25:301:30 : notewarning: 
                      _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      getc_unlocked(FILE *);
                            ^insert '_Nonnull' if the pointer should never be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:342:18: note: insert '_Nonnull' if the pointer should never be null
 FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
 int     __srget(FILE *);
                     ^                                ^int      fileno(FILE *);

                                 _Nonnull
                     ^

                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h warning:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 305:18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
        ^
 :::21 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:301: warning: note: 382:insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]6int      fileno(FILE *);
                     ^: note: :25:

 note: insert '_Nullable' if the pointer may be nullint     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);                      _Nullable


                        ^
 int      getc_unlocked(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:21insert '_Nullable' if the pointer may be null
 : note
 : FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));insert '_Nullable' if the pointer may be null305:18: note: insert '_Nonnull' if the pointer should never be null
                            ^

 int      fileno(FILE *);
                     ^
                             _Nullable
        ^
                      _Nonnull

          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:382:25: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      getc_unlocked(FILE *);
                            ^:
                             _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);:321

 :                        ^
                         _Nullable18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h301:6:
 :384:30:  warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:21: note: insert '_Nonnull' if the pointer should never be null: warning:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      putc_unlocked(int, FILE *);
                                 ^
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                     ^

                        ^
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                         _Nonnull:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null

 :321:18:384:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343 note: FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));:35:
 insert '_Nullable' if the pointer may be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]30int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");        ^:

                     ^ note: insert '_Nullable' if the pointer may be null
          _Nonnull 


                      _Nullable
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      putc_unlocked(int, FILE *);
                                 ^
                                  _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::343:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h35321::384305:3018: :note: insert '_Nonnull' if the pointer should never be null
 note: insert '_Nonnull' if the pointer should never be null
 : note: :int      putc_unlocked(int, FILE *);18int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");insert '_Nullable' if the pointer may be null:
                     ^

                      _Nonnull                                 ^ warning
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                  _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fileno(FILE *);
                     ^
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:389
                                      ^
 :323:16:                                        _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:24:
 : warning305:warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : :35:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      getw(FILE *);
                   ^18: note: insert '_Nullable' if the pointer may be null
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 note: insert '_Nonnull' if the pointer should never be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 int      fileno(FILE *);
                     ^:389:16:                                      ^ note
                      _Nullable
 : insert '_Nullable' if the pointer may be null
                                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                          ^
 305:18: note: insert '_Nonnull' if the pointer should never be null
 int      getw(FILE *);
                   ^int      fileno(FILE *);
                     ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:344:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:321:18: warning: 23pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :
                    _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:389:16: note: insert '_Nonnull' if the pointer should never be nullwarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:

 int      getw(FILE *);
                   ^

 int     __swbuf(int, FILE *);                     ^
 24:                     _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:321:18:note
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:390:                           ^
 insert '_Nullable' if the pointer may be null
 :21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] note: 
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");int      putw(int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                          ^
                           _Nullable

 insert '_Nullable' if the pointer may be null:                        ^
 344/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323::
 2423int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");::
                     ^
                      _Nullable
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int     __swbuf(int, FILE *);
                          ^
                           _Nullable390:21
 : note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note: : insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null
 :321:18int      putw(int, FILE *);
 : note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");                        ^
                         _Nullable
                          ^

 344: insert '_Nonnull' if the pointer should never be null:23: note:                            _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null

 int     __swbuf(int, FILE *);
                          ^
 390:21                           _Nonnull
 int      pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 : note:                      ^

                      _Nonnull
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:int      putw(int, FILE *);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323                         _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:38: warning: :24
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:26: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 353FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");:                          ^
 49
 :                                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::24:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]323 note
 :38: : __header_always_inline int __sputc(int _c, FILE *_p) {note: insert '_Nullable' if the pointer may be nullinsert '_Nullable' if the pointer may be null

                                                ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:353FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                            ^
 :49: FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:
                                        ^
                          ^note                                         _Nullable: 
                           _Nullable

 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323__header_always_inline int __sputc(int _c, FILE *_p) {
                                                ^
                                                  _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:38:24: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h26note: ::353insert '_Nonnull' if the pointer should never be null
 ::  note: note: insert '_Nonnull' if the pointer should never be null
 49: note: insert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                          ^
                           _Nonnull
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                            ^
                              _Nullable 
 __header_always_inline int __sputc(int _c, FILE *_p) {
                                        ^
                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397
                                                ^
                                                  _Nonnull 
 ::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h323:38::323:626: : warningnote: insert '_Nonnull' if the pointer should never be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
        ^
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:6: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:38: note: insert '_Nullable' if the pointer may be null
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
        ^
          _Nullable 
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
                                        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:6char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                            ^
                              _Nonnull 
 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:45: insert '_Nonnull' if the pointer should never be null
 warning
                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");:void     flockfile(FILE *);

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                        ^
        ^
 323:
 38: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                                               ^
 : insert '_Nonnull' if the pointer should never be null
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:45: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 :                                        ^char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
 379                                               ^

                                         _Nonnull
                                                 _Nullable 
 :22: note: insert '_Nullable' if the pointer may be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h342:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:void     flockfile(FILE *);323:6: 
 :warning397                        ^:45
 :18                         _Nullable 
 : warningnote: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : insert '_Nonnull' if the pointer should never be null
 :379:22: note: insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                                               ^        ^

                                                 _Nonnull void     flockfile(FILE *);
 int     __srget(FILE *);                        ^

                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:380:24: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :int      ftrylockfile(FILE *);
                           ^
 :6323/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :6: note: insert '_Nullable' if the pointer may be null
 : warning                     ^
 :380:24: note: insert '_Nullable' if the pointer may be null
 FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
        ^: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      ftrylockfile(FILE *);
                           ^
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
          _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
        ^
                            _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:6: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:323:6: note: insert '_Nonnull' if the pointer should never be null
 :380:24:342:note: : note18: : FILE    *popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");insert '_Nonnull' if the pointer should never be null

 int      ftrylockfile(FILE *);
                           ^
        ^
          _Nonnull note                            _Nonnull

 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:381:24: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:342char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);: void     funlockfile(FILE *);

 insert '_Nullable' if the pointer may be null:                          ^

 18: int     __srget(FILE *);        ^warning
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:381:24: note: insert '_Nullable' if the pointer may be null
                     ^
                      _Nullable
 void     funlockfile(FILE *);
          _Nullable 

                          ^
                           _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:342/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:6: :18:: note: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);int     __srget(FILE *);381:24
        ^int     __srget(FILE *);
          _Nonnull 
 : note: insert '_Nonnull' if the pointer should never be null

 void     funlockfile(FILE *);
                          ^
                           _Nonnull                     ^


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:382:25: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:342int      getc_unlocked(FILE *);
 :18: note: insert '_Nullable' if the pointer may be null
                            ^
 int     __srget(FILE *);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:382:25:                      ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:21: : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:420:18:insert '_Nullable' if the pointer may be null
 
 int      getc_unlocked(FILE *);
                            ^
                             _Nullable
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);

 342:18                        ^int      fseeko(FILE * __stream, off_t __offset, int __whence);
                     ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:382:25: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:420:18: note: 
 :insert '_Nullable' if the pointer may be nullint      getc_unlocked(FILE *);
                            ^

                             _Nonnull
 note: insert '_Nonnull' if the pointer should never be null
 int      fseeko(FILE * __stream, off_t __offset, int __whence);
                     ^
 int     __srget(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:384:30: :                       _Nullable
 warning: 21: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                     ^

                      _Nonnull
 int      putc_unlocked(int, FILE *);
                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:384::343:: :42030insert '_Nullable' if the pointer may be null21: note:18: note: : :insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null


 int      putc_unlocked(int, FILE *);
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0); int      fseeko(FILE * __stream, off_t __offset, int __whence);
                     ^warning:                                  ^

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                  _Nullable

                        ^
                         _Nullable
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:384:30:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null343:
 21:int      putc_unlocked(int, FILE *);21:
  note:                        _Nonnull
 insert '_Nonnull' if the pointer should never be null
                                 ^
                                  _Nonnull
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                        ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:389:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:35: 421warning:note: : 16: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :20:int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] warning: 
                                      ^

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 off_t    ftello(FILE * __stream);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      getw(FILE *);
                   ^343:                     ^

 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                        ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:389:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:16421:343:2120: :35:  notenote:: : insert '_Nonnull' if the pointer should never be null 
 notenoteinsert '_Nullable' if the pointer may be null
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                        ^
 off_t    ftello(FILE * __stream);:                          _Nonnull
 insert '_Nullable' if the pointer may be null
 : 
                     ^
                       _Nullable
 int      getw(FILE *);
                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:421:20                    _Nullable
 :insert '_Nullable' if the pointer may be null
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 insert '_Nonnull' if the pointer should never be null
 :                                      ^off_t    ftello(FILE * __stream);389
                                       _Nullable
 :343:
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:35::35: warning note: insert '_Nonnull' if the pointer should never be null
 :                        _Nonnull
 16: note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 427int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 int      getw(FILE *);                                      ^
 int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 :20
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                      ^:
                   ^ warning
                    _Nonnull
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]343/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::35:
                                       _Nonnull note: insert '_Nullable' if the pointer may be null
 390:21: warningint     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
                                      ^
                                       _Nullable: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      putw(int, FILE *);
                        ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:343:35int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                       ^: note
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null390::
 21: note427:int     __svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
 :20:: insert '_Nullable' if the pointer may be null
 344int      putw(int, FILE *);                                      ^
                                       _Nonnull

 note: :23                        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null:
                         _Nullable
 344:23: warning:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:390 warning: :: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 21:
 note: insert '_Nonnull' if the pointer should never be nullint     __swbuf(int, FILE *);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int     __swbuf(int, FILE *);
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);int      putw(int, FILE *);                          ^
                       ^

                        ^
                         _Nonnull

                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:344:23: note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:26: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427                          ^
 :char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
 20: note: 
                            ^
 int     __swbuf(int, FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                          ^:344:23: :note: insert '_Nullable' if the pointer may be null397
                           _Nullableinsert '_Nonnull' if the pointer should never be null
 :

 int     __swbuf(int, FILE *);
                          ^
                           _Nullable
 26: note: int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
 insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h344:23:                        ^
                         _Nonnull
 note
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: insert '_Nonnull' if the pointer should never be null
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);:int     __swbuf(int, FILE *);
 344
                          ^
 :                            ^                           _Nonnull
 23
 :                               _Nullable 
 note: insert '_Nonnull' if the pointer should never be null
 int     __swbuf(int, FILE *);
 427:                          ^
                           _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:39766: :warning: 26: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                                                                     ^
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
 :353/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427:                            ^
 49/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                              _Nonnull 
 :66: __header_always_inline int __sputc(int _c, FILE *_p) {:353
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                                ^note:: 39749: warning: insert '_Nullable' if the pointer may be null
 :45: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:353:49: note: insert '_Nullable' if the pointer may be null

 __header_always_inline int __sputc(int _c, FILE *_p) {                                                                     ^char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                                                ^
 __header_always_inline int __sputc(int _c, FILE *_p) {
                                                ^
                                                  _Nullable 

                                                                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:353:49
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:353:49: : note:                                                ^
 insert '_Nullable' if the pointer may be null
 427:66:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:__header_always_inline int __sputc(int _c, FILE *_p) {
 45note:                                                 ^
                                                  _Nullable 
 :insert '_Nonnull' if the pointer should never be null
 note:  __header_always_inline int __sputc(int _c, FILE *_p) {
                                                ^
                                                  _Nonnull 
 noteinsert '_Nullable' if the pointer may be null
 : insert '_Nonnull' if the pointer should never be null
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                                               ^
                                                 _Nullable 
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                                                                     ^
                                                                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:45: note: insert '_Nonnull' if the pointer should never be null
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                                 _Nonnull 
 353:49: note: insert '_Nonnull' if the pointer should never be null
 428:19: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                      ^
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:19: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397__header_always_inline int __sputc(int _c, FILE *_p) {
                                                ^insert '_Nullable' if the pointer may be null

                                                  _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                      ^
                        _Nullable
 :6: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:19: char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);:22:note: 
        ^
 warning: insert '_Nonnull' if the pointer should never be null
          _Nullable 
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                      ^
                        _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     flockfile(FILE *);
                        ^
 :397:6: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379:22:53char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam); : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

        ^
          _Nonnull 
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:53: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379:22:int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);note 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: warning:                                                         ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                                          _Nullable420:insert '_Nullable' if the pointer may be null
 void     flockfile(FILE *);18void     flockfile(FILE *);
                        ^
 : warning
                         _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428int      fseeko(FILE * __stream, off_t __offset, int __whence);
 :379:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                     ^379:22: note: 
 22: insert '_Nullable' if the pointer may be null
 :53: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be nullnote: :420:18: void     flockfile(FILE *);

 noteinsert '_Nonnull' if the pointer should never be null                        ^: 

                         _Nullable
 insert '_Nullable' if the pointer may be null
 void     flockfile(FILE *);
                        ^
                         _Nonnull
 int      fseeko(FILE * __stream, off_t __offset, int __whence);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:379:22:int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h 
                                                        ^
                                                          _Nonnull
                     ^
                       _Nullable:380:24
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429:420:18notewarning: :24: note: : insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      fseeko(FILE * __stream, off_t __offset, int __whence);
 int      ftrylockfile(FILE *); warning: 
                     ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]void     flockfile(FILE *);


                       _Nonnull
                           ^                        ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:380:24: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :429:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 421:20: warningint      ftrylockfile(FILE *);:24: : :
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 noteoff_t    ftello(FILE * __stream);380: 
                     ^
 :24: note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null

 :421:int      ftrylockfile(FILE *);
                           ^
                            _Nullable
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
                           ^20                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

 ::380:                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:38024/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429::note: : 24insert '_Nullable' if the pointer may be null
 :24off_t    ftello(FILE * __stream); note
 note: insert '_Nonnull' if the pointer should never be null
                     ^
                       _Nullable
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
 : note: insert '_Nullable' if the pointer may be null                           ^
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                             _Nonnullinsert '_Nonnull' if the pointer should never be null421
 :20
 :int      ftrylockfile(FILE *);
                           ^
 note:                             _Nonnull
 insert '_Nonnull' if the pointer should never be null
 int      ftrylockfile(FILE *);
                           ^
                            _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h430
 off_t    ftello(FILE * __stream);
                     ^
 ::                       _Nonnull38121
 : :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hwarning24: warning: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);void     funlockfile(FILE *);380:
 427                        ^24: 

 :note: 20: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:430pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :insert '_Nonnull' if the pointer should never be null
 21int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                       ^int      ftrylockfile(FILE *);                          ^

 :
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427                           ^insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                            _Nonnull
 20: note:381:24: : note: 
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:381int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                        ^
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);insert '_Nullable' if the pointer may be null

                          _Nullablevoid     funlockfile(FILE *);
                          ^
                           _Nullable
 :24                       ^
 :
                         _Nullable warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 void     funlockfile(FILE *);
                          ^
 :430:21: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:381:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::427:20:int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 note:                         ^
 insert '_Nonnull' if the pointer should never be null
                          _Nonnull
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                       ^
                         _Nonnull24
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:381:430: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:67:24:427:66:  note: warning: insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:void     funlockfile(FILE *);
 
 void     funlockfile(FILE *);warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                          ^
                          ^                           _Nonnull

 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                                                                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                           _Nullable
 :                                                                      ^
 427382::66/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:430/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: note: insert '_Nullable' if the pointer may be null
 :67: 25: int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                                                                     ^
                                                                       _Nullable
 note: 381:24/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427insert '_Nullable' if the pointer may be null
 :: warningint      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);note: : insert '_Nonnull' if the pointer should never be null

 66:                                                                       ^void     funlockfile(FILE *);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note                          ^
 : 
                           _Nonnull
 insert '_Nonnull' if the pointer should never be null
                                                                        _Nullable
 int      getc_unlocked(FILE *);

                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:430:67: int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                                                                     ^
                                                                       _Nonnull:382note: insert '_Nonnull' if the pointer should never be null

 :25: note: int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 insert '_Nullable' if the pointer may be null:382:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:25                                                                      ^: warning: 428pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 int      getc_unlocked(FILE *);:19:                                                                        _Nonnull

 warning: int      getc_unlocked(FILE *);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                            ^
                            ^
                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:25: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hwarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :
 :382:25: note: insert '_Nullable' if the pointer may be null
 382int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
 :25: note: insert '_Nonnull' if the pointer should never be null
 int      getc_unlocked(FILE *);
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);int      getc_unlocked(FILE *);
                            ^

                             _Nonnull
                            ^
                             _Nullable                            ^
                      ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:384

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:25: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:19:: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nullable' if the pointer may be nullint      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);

 38230                            ^:25: note: insert '_Nonnull' if the pointer should never be nullint      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);

 : warning:                       ^
                        _Nullablepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      getc_unlocked(FILE *);                              _Nullable


                            ^
                             _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:384/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      putc_unlocked(int, FILE *);:
 :19:                                 ^
 note: 30:431insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 :384:3025: note:  :insert '_Nonnull' if the pointer should never be nullint      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0); 

 note: warningint      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);insert '_Nullable' if the pointer may be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      putc_unlocked(int, FILE *);
 int      putc_unlocked(int, FILE *);
                      ^

                        _Nonnull
                                 ^                                 ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

                                  _Nullable
 :428:53: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                            ^
                              _Nonnull384/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :30: note: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);384
                                                        ^:431:insert '_Nullable' if the pointer may be null56:
 warning: 
 :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      putc_unlocked(int, FILE *);30: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                 ^
                                  _Nullable
 428note: insert '_Nonnull' if the pointer should never be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      putc_unlocked(int, FILE *);
 :384:int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);:
                                                           ^
 5330::                                 ^ /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431 note:note: : 56: insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be nullnote: 


                                  _Nonnullint      putc_unlocked(int, FILE *);
                                 ^
                                  _Nonnull
 insert '_Nullable' if the pointer may be null
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                        ^
                                                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                           ^
                                                             _Nullable:389/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:53: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::38916:
 warning: 
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                                        ^
                                                          _Nonnullint      getw(FILE *);:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 16: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                   ^
 :431:56:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429int      getw(FILE *); /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:389:note
 : 24:                    ^warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 :16: note: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be nullint      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:389int      getw(FILE *);
                   ^
                    _Nullable


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);:16:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429
                                                           ^
                                                             _Nonnull
 :24: note note: : :insert '_Nullable' if the pointer may be nullinsert '_Nullable' if the pointer may be null

 int      getw(FILE *);
                   ^
                    _Nullable
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
                           ^
                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:389:16389/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:44516:429:: note24: ::: note noteinsert '_Nonnull' if the pointer should never be null: insert '_Nonnull' if the pointer should never be null

 : int      getw(FILE *);insert '_Nonnull' if the pointer should never be null
 int      getw(FILE *);
                   ^29
                    _Nonnull
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
 :
                   ^ /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning                           ^
                             _Nonnull: 
 390:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      putw(int, FILE *);
 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                    _Nonnull

 :                        ^                                ^430/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:390
 :21:
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:445:29:int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);21:
                         ^
 note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 430:21: note390:21: note: insert '_Nullable' if the pointer may be nullint     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                ^
 :                                    _Nullable
 insert '_Nullable' if the pointer may be null

 int      putw(int, FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:445int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 :29:                        ^ note
                         _Nullable                        ^
 warning
                          _Nullable: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 390:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      putw(int, FILE *);
                        ^

 :430:21: note: insert '_Nonnull' if the pointer should never be null
 21: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 :int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);                        ^390
                          _Nonnullnote: 
 insert '_Nonnull' if the pointer should never be null
 :21: noteint      putw(int, FILE *);
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                ^int      putw(int, FILE *);:430:67
                        ^

                                  _Nonnull
 : warning                         _Nonnull
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446:30: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);:                                                                      ^

 26
                                 ^:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                        ^
                         _Nullable
 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:390:21: note: insert '_Nonnull' if the pointer should never be null
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);int      putw(int, FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 430
                        ^
                         _Nonnull
                            ^:
 67: note: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:26: note: insert '_Nullable' if the pointer may be null446insert '_Nullable' if the pointer may be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :30: note: insert '_Nullable' if the pointer may be null397
 :26: warning: 
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                            ^
                              _Nullable 
 int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                                                                      ^
                                                                        _Nullable
 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                 ^
                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                            ^
 :397:26:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h446:30: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h397:note: :430:67: note: note: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 26: note: insert '_Nullable' if the pointer may be null
 int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
                            ^insert '_Nonnull' if the pointer should never be null
                                                                      ^
                            ^
                              _Nonnull 
 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);

                              _Nullable                                                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:
 45: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:26: char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);:431:25note: 
                                 ^
 : 
                                   _Nonnull
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:23int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
 :insert '_Nonnull' if the pointer should never be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:45: note: insert '_Nullable' if the pointer may be null
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431
 :25:                            ^
                              _Nonnull 
 note
                      ^
                                               ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:45: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447insert '_Nullable' if the pointer may be null
 :23:                                                  _Nullable 
 note: insert '_Nullable' if the pointer may be null

 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                            ^
                              _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:45ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
                       _Nullable
 : note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:25char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);447::
                                                ^
                                                 _Nonnull 
 :23: note: insert '_Nonnull' if the pointer should never be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: insert '_Nonnull' if the pointer should never be null
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397
                                               ^
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                            ^
 :
                              _Nonnull6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 397:
 45: note                      ^
                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);:431
 :: :        ^56: insert '_Nullable' if the pointer may be null447:warning
 : 24: warning
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                               ^
                                                 _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:6int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                                           ^char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
        ^
          _Nullable 

 397:45: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::431:397:6: : 56insert '_Nonnull' if the pointer should never be null
 : notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);note: ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^
 insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:24: note: insert '_Nullable' if the pointer may be null
                                               ^
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);                                                 _Nonnull 

                                                           ^
                                                             _Nullable


        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:56: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                           ^
                                                             _Nonnull
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:397:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: note: ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^420:18insert '_Nullable' if the pointer may be null
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      fseeko(FILE * __stream, off_t __offset, int __whence);
 :
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);                         _Nullable

        ^445:29                     ^
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:          _Nullable 
 :int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                ^447420/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:24: note
 :: :18: 397:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:445note: insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null6
 ::29:  
 notenoteint      fseeko(FILE * __stream, off_t __offset, int __whence);: insert '_Nullable' if the pointer may be null
 : insert '_Nonnull' if the pointer should never be null
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^
                         _Nonnull
 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 char    *tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447                                ^
                                  _Nullable

                     ^
        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
          _Nonnull 
 :53: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:445:420:18: note: ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                                                    ^
 insert '_Nonnull' if the pointer should never be null
 29: note: insert '_Nonnull' if the pointer should never be null
 :420/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447::int      fseeko(FILE * __stream, off_t __offset, int __whence);18:53int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);:

                                ^
                                  _Nonnull                       ^notewarning
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446:30: warning: 
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                                    ^
                                                      _Nullable
 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                       _Nonnullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                 ^

 int      fseeko(FILE * __stream, off_t __offset, int __whence);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446:30: note: 
 insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:421:20::447:int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                 ^53420
                                   _Nullable
 :18: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446:30:  note: : noteinsert '_Nonnull' if the pointer should never be null
 note: insert '_Nonnull' if the pointer should never be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
                                                      _Nonnull
 off_t    ftello(FILE * __stream);
                     ^
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:100: int      fseeko(FILE * __stream, off_t __offset, int __whence);
                     ^warning: 
                       _Nullable
 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:421/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:420:                                 ^ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 :18:20: 
                                                                                                   ^
                                   _Nonnull
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:100: int      fseeko(FILE * __stream, off_t __offset, int __whence);note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: note: insert '_Nullable' if the pointer may be null447:23: warning: 

                     ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be nulloff_t    ftello(FILE * __stream);

                       _Nonnull
                     ^
                       _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:421:20:
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 off_t    ftello(FILE * __stream);                                                                                                   ^421
                                                                                                     _Nullable:
                      ^

                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:42120:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:20: note: :447: :note: 23: 100insert '_Nonnull' if the pointer should never be nullnote:: 
 insert '_Nullable' if the pointer may be null off_t    ftello(FILE * __stream);
 noteinsert '_Nullable' if the pointer may be null

                     ^
                       _Nonnull
 : insert '_Nonnull' if the pointer should never be null
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427:20: warning: off_t    ftello(FILE * __stream);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);                     ^
                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447
                                                                                                   ^
                                                                                                     _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:421
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                       ^
 23: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:22: warning:ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^20: 
                       _Nonnullnote: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : :427:20: note: insert '_Nullable' if the pointer may be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:24: 
 off_t    ftello(FILE * __stream);
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                     ^
                     ^
                       _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:22: note: insert '_Nullable' if the pointer may be null
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                       ^
                         _Nullable
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h447:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:24::20::448 note note: 427: insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null

 :22: note: int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                       ^
                         _Nonnull:ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^insert '_Nonnull' if the pointer should never be null

                         _Nullable

 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:42720:66
                      _Nonnull: warning
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:23: 447: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: :24:int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] 
                       ^
 note: insert '_Nonnull' if the pointer should never be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:20: note: insert '_Nullable' if the pointer may be null
 :447:23: noteint      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
 :                       ^                                                                     ^53
                         _Nullable
 : : insert '_Nullable' if the pointer may be null

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427:20:ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^

                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447note: insert '_Nonnull' if the pointer should never be null                        _Nullable427
 :66:53: : note: insert '_Nullable' if the pointer may be null
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);note: insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:23: note: insert '_Nonnull' if the pointer should never be null
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                                                                     ^
                                                                       _Nullable
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
                                                      _Nullablessize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

                        _Nonnull

                       ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::427/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:52: warning: 447:427::66pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 53::: warning:  66ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]notenote
 : insert '_Nonnull' if the pointer should never be null
 : insert '_Nonnull' if the pointer should never be null
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
                                                                     ^
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427
                                                    ^:66: note: insert '_Nullable' if the pointer may be null

                                                      _Nonnull
                                                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:
 int      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);100                                                                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: warning448
                                                                     ^
                                                                       _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                                                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:427:66: note: insert '_Nonnull' if the pointer should never be null
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);::428:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447
 52: note: :insert '_Nullable' if the pointer may be null
 100                                                                     ^
                                                                       _Nonnull19: warningssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: note:                                                    ^
                                                     _Nullable

 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:52: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                   ^
                                                     _Nonnullssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                                   ^
 428

                                                                                                     _Nullable
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:82/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :447:19::                      ^ 100: warningwarning: note: insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                                   ^
                                                                                                     _Nonnull

 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);:22
 :448                       ^
 :19warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:42882
 : note:19: ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 note: note:                      ^insert '_Nullable' if the pointer may be null: insert '_Nullable' if the pointer may be null

 : insert '_Nullable' if the pointer may be null
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                      ^
                        _Nullable

 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                      ^
                        _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:19: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428                      ^:448:22: 

                                                                                   _Nullable
 note:: insert '_Nullable' if the pointer may be null
                        _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:82: note: ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:53: warning: insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                      _Nullable
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^
                                                        ^19                                                                                   _Nonnull
 :
 : note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428448/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::449:int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                      ^:
                        _Nonnull53: note: 
 2221insert '_Nullable' if the pointer may be null
 :: note: int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428 warning: :insert '_Nonnull' if the pointer should never be null
                                                        ^
                                                          _Nullable

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428:53: note: insert '_Nonnull' if the pointer should never be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                     ^
                      _Nonnullint      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                        ^
                                                          _Nonnull53: 

 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                    ^
 :448:23: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 449pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:

 21: note: insert '_Nullable' if the pointer may be null
 int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                        ^
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:428/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:53: note:                     ^
                      _Nullable
 :448insert '_Nullable' if the pointer may be null
 ::23429int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                        ^
                                                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::24: : note449/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: insert '_Nullable' if the pointer may be null
 :21:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
                        _Nullableint      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0); 
 :428                           ^:note
 53: 
 note: insert '_Nonnull' if the pointer should never be null
 : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429:24: int      vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: insert '_Nullable' if the pointer may be null:

 448int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
                           ^:23: 
                                                        ^
                                                          _Nonnull

 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                    ^
                      _Nonnull
                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429:24/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:67: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :429:: warning: FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 24: notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note:                                                                   ^
 : insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
 :67:ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);

                      ^ note: 
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);                           ^                        _Nonnull

 insert '_Nullable' if the pointer may be null

                             _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:52:                           ^FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                                                  ^
                                                                    _Nullable

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429:24: note: insert '_Nullable' if the pointer may be nullssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :430:21: warning: :
 449:67: note: insert '_Nonnull' if the pointer should never be null
                                                   ^
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:52: note                             _Nullable
 : insert '_Nullable' if the pointer may be null
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                                                  ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:429:24:                                                                    _Nonnull
 note: insert '_Nonnull' if the pointer should never be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                   ^
                                                     _Nullable
 int      vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
                           ^
                             _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :448:52pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:430:21FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 :int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                                                   ^
                                                     _Nonnull                        ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:6: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h warning:430: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::21:int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                        ^
 insert '_Nullable' if the pointer may be null 448:82:note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :430:21: note: insert '_Nullable' if the pointer may be null
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
     ^
       _Nullable 
 : insert '_Nullable' if the pointer may be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:6: int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                        ^
                          _Nullable
                        ^
                          _NullableFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));

 :448     ^
       _Nonnull :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 82/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:::430/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450 430:note: :21: 21note: : note: insert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null:
 insert '_Nonnull' if the pointer should never be null

 int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);27: 
                        ^
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                          _Nonnull
                                                                                 ^
 int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                        ^warning                                                                                   _Nullable
                          _Nonnull

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:430:67/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 : :82:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                          ^
 warning: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :430::450:27: 67: note: insert '_Nullable' if the pointer may be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^
                                                                                   _Nonnull
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:21:                          ^
                           _Nullable warning
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                                                                      ^
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:430:67: noteint      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                                                                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:27: FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                    ^
 : insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:430:67:int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0); note
 : 449                                                                      ^
 insert '_Nullable' if the pointer may be null

                                                                        _Nullable
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);:                          ^
                           _Nonnull21

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                                                      ^:
 430                                                                         _Nullable
 note:67: note: : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null
 450:28: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                                                                      ^
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                    ^
                      _Nullable
 430:                                                                        _NonnullFILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));67: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 449:21: note:                            ^note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null

 431:25:int      vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
                                                                      ^

 warningFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                    ^
                                                                        _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:28: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                      _NonnullFILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));:

 25: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);:67:int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);                              _Nullable 

                            ^
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 450/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:28FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                                                  ^

 ::                            ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h25:449:67 note: :: note: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be null
 note: insert '_Nullable' if the pointer may be null
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:                            ^
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                                                  ^
 25: 
                                                                    _Nullable                              _Nullable

 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                           ^
                             _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:431:44:: int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                            ^
 warning                              _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 25: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));449:67
                                           ^
 : noteint      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                            ^: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450
                              _Nonnull
 :44:FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 :431:                                                                  ^
                                                                    _Nonnull56:FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 
                                           ^
 :431:25: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: warning:: insert '_Nonnull' if the pointer should never be null
 449:                                             _Nullable 
 6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
 450:
 44: 
                            ^
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^
 note:                                                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:insert '_Nonnull' if the pointer should never be null                              _Nonnull6

 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null:431:56:
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                           ^
                                             _Nonnull 
 431:56: warningFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 : :     ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450: note6: 

 : insert '_Nullable' if the pointer may be null
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                           ^
       _Nullable 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                                                           ^

 449:                                                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:56: note: 6insert '_Nullable' if the pointer may be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 note: FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^
 insert '_Nonnull' if the pointer should never be null
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                           ^
                                                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:6: note:: FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:431:56insert '_Nullable' if the pointer may be null: 431
 note:      ^:56:

       _Nonnull 
 insert '_Nonnull' if the pointer should never be null
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
                                                           ^note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450     ^
       _Nullable 
                                                             _Nonnull

 :27: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:6: note: insert '_Nonnull' if the pointer should never be null
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                          ^
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:
 : 27       _Nonnull : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:445insert '_Nonnull' if the pointer should never be null
 note: 
 int      vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
 :insert '_Nullable' if the pointer may be null
                                                           ^
                                                             _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461:21: warning: 29: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                          ^
                           _Nullable
 extern __const char *__const sys_errlist[];
                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:27:445:: note: 29warninginsert '_Nonnull' if the pointer should never be null:21 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : 
 note: insert '_Nullable' if the pointer may be null
 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                ^
 extern __const char *__const sys_errlist[];
                    ^
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                      _Nullable 
                          ^
                           _Nonnull
 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                ^
 450/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:445:29:28: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 21:: note:445: insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);:extern __const char *__const sys_errlist[];29: 
                    ^                           ^

                      _Nonnull 

                                ^
                                  _Nullable
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 450:::28: 44520: :warningnote: insert '_Nullable' if the pointer may be null: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]29: note: int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                           ^

                             _Nullable 
 insert '_Nonnull' if the pointer should never be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:28: note: insert '_Nonnull' if the pointer should never be null
                                ^
                                  _Nullable
 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                ^
                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:445:29: note: insert '_Nonnull' if the pointer should never be null
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);

 int     dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                ^
                       ^
                                  _Nonnull                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:                             _Nonnull 
 20: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:45030:insert '_Nullable' if the pointer may be null
 44:446: int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                       ^warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: 
 warning: 30
                        _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 463:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h20:                                 ^: note: 
 450:44insert '_Nonnull' if the pointer should never be null
 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446:30:int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 : insert '_Nullable' if the pointer may be null 
 notewarning:                        ^: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));                        _Nonnull

                                           ^
                                             _Nullable int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                 ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 463:insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446:30: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:44: note: insert '_Nonnull' if the pointer should never be nullint     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                 ^

                                   _Nullable
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                        ^
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                           ^
                                             _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:446/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h463                                 ^:450:
                                   _Nullable
 :306: ::warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h21 note: : note: : insert '_Nullable' if the pointer may be null:
 446:30: note: insert '_Nonnull' if the pointer should never be nullint      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]


                        ^
                          _Nullable
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^
 int     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                 ^
 insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:21:450:6: note: insert '_Nullable' if the pointer may be null
 : note: insert '_Nonnull' if the pointer should never be null
                                   _Nonnull

 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                        ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint     vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447
 :23                                 ^::
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 463:46:     ^
       _Nullable  warning: 

                                   _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note: 447:23ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 : warning:                       ^
 insert '_Nonnull' if the pointer should never be null
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:23:FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463
       _Nonnull :46:  notenote: insert '_Nullable' if the pointer may be null

 : insert '_Nullable' if the pointer may be null
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                                                 ^
                                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461:21:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]46
 :                       ^

                       _Nullablewarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 extern __const char *__const sys_errlist[];
                    ^
 notessize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461::: 21/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447447::insert '_Nonnull' if the pointer should never be null
 note: :23:insert '_Nullable' if the pointer may be null
 note: extern __const char *__const sys_errlist[];
                    ^int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);insert '_Nullable' if the pointer may be null

                      _Nullable 
                                                 ^23: note
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                                                   _Nonnull

                      ^
                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
                       _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:447:23: note:22: : 461:24:insert '_Nonnull' if the pointer should never be null
 :warning warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 21: note: insert '_Nonnull' if the pointer should never be null
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
                       _Nonnull
 extern __const char *__const sys_errlist[];
                    ^: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);

                      _Nonnull 
 447:24                       ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:char    *ctermid_r(char *);:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h463:
                        ^
 :44720:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h warning:24::464: :  pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warningnote: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 22:insert '_Nullable' if the pointer may be null

 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^
 note: insert '_Nullable' if the pointer may be null
 char    *ctermid_r(char *);
                        ^                       ^ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);

                         _Nullable

                       ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h447:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447: note: ::24insert '_Nonnull' if the pointer should never be null:
 24: 463 :char    *ctermid_r(char *);
 20note                        ^: note: 
 : insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null                         _Nonnull
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464insert '_Nullable' if the pointer may be null
 :

 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                       ^
                        _Nullable
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);6

                         _Nullable                       ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 ::pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]463:20:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447 
 note: 447:53char    *ctermid_r(char *);: 
 warninginsert '_Nonnull' if the pointer should never be null
 :24:        ^int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                       ^
                        _Nonnull
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:
 21pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: insert '_Nonnull' if the pointer should never be null
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
                        ^
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                       ^
                         _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::447:53: warning5321: : :note: 464 :insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note: insert '_Nullable' if the pointer may be null6int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                        ^

                          _Nullable

 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
 : note: insert '_Nullable' if the pointer may be null
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                                      _Nullable
 :463char    *ctermid_r(char *);
        ^
          _Nullable 
 :21:447:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:53: 447:53note:: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h insert '_Nullable' if the pointer may be null
 :464:: note: insert '_Nonnull' if the pointer should never be null
 note: insert '_Nonnull' if the pointer should never be null
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
                                                      _Nullable
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                        ^
                          _Nonnull
 ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                                      _Nonnull463::6: note: 
 46insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:char    *ctermid_r(char *);
        ^100: warning: 
          _Nonnull pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : 447int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                                                 ^warning

 :53: note: insert '_Nonnull' if the pointer should never be null
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:46ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                    ^
                                                      _Nonnull
 465:19::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h  
 :447note: insert '_Nullable' if the pointer may be null
 :100: warning: ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);

                                                                                                   ^
                                                 ^
                                                   _Nullablepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:100:
 note: ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 463
                                                                                                   ^:46:
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:insert '_Nonnull' if the pointer should never be null
 char    *fgetln(FILE *, size_t *);
 447:100                     ^
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 : note                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                                                                                   ^
                                                                                                     _Nullable

                                                   _Nonnull
 :465:19: note: : insert '_Nullable' if the pointer may be nullinsert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:
 100: notechar    *fgetln(FILE *, size_t *);ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);464
 :
                     ^                                                                                                   ^
                                                                                                     _Nullable22: 

                      _Nullable
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:447:100: notewarning: : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :char    *ctermid_r(char *);
                        ^
 465:19: note: ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null:464:22:
 insert '_Nonnull' if the pointer should never be null                                                                                                   ^
                                                                                                     _Nonnull
 

 char    *fgetln(FILE *, size_t *);
                     ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:22:ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                                   ^
 note warning: : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]char    *ctermid_r(char *);

 465:                                                                                                     _Nonnull
                        ^
                         _Nullable
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:22: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448char    *ctermid_r(char *);
 448::2222                        ^
                         _Nonnull:: 
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:46429 : note: insert '_Nullable' if the pointer may be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :6: ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 char    *fgetln(FILE *, size_t *);
                               ^
 warning: 
                     ^
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *ctermid_r(char *);
        ^
                     ^:448:22:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note
                      _Nullable
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:6465: :: note29/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:22: : noteinsert '_Nullable' if the pointer may be null
 : char    *ctermid_r(char *);insert '_Nullable' if the pointer may be null

        ^
 :insert '_Nonnull' if the pointer should never be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
          _Nullable 
                     ^
                      _Nullable
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                     ^ note: insert '_Nullable' if the pointer may be null

 char    *fgetln(FILE *, size_t *);
                               ^
                                _Nullable
 ::448:                      _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 464:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h22: note: 465::44829: :23note: insert '_Nonnull' if the pointer should never be null
 :insert '_Nonnull' if the pointer should never be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *ctermid_r(char *);
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
        ^
          _Nonnull 
 note: insert '_Nonnull' if the pointer should never be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 char    *fgetln(FILE *, size_t *);
                               ^                     ^
                      _Nonnull465:19: warning: 

                                _Nonnullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *fgetln(FILE *, size_t *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:23: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                     ^

 :448:23: note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:6ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
                        _Nullable465:19:                      ^
 : 
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *fgetln(FILE *, size_t *);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:19:warning:448:23 note: : note: insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be nullchar    *fgetln(FILE *, size_t *);

                     ^
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]448:23
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 :                      _Nonnull
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                      ^
                        _Nullable:char    *fgetln(FILE *, size_t *);
 465:ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                      ^
                        _Nonnull
 29: 
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        ^
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 448:448:char    *fgetln(FILE *, size_t *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h23: :52: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                               ^note: insert '_Nonnull' if the pointer should never be null:ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
 465:6:
                                                   ^
 note: insert '_Nullable' if the pointer may be null

 char    *fgetln(FILE *, size_t *);
        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
          _Nullable 
 465:29: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::465ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);insert '_Nullable' if the pointer may be null:

                      ^
 6:char    *fgetln(FILE *, size_t *);                        _Nonnull
 note: 
                               ^448/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::448insert '_Nonnull' if the pointer should never be null
 :char    *fgetln(FILE *, size_t *);
 52:52                                _Nullable: note: 

 warning:         ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 29insert '_Nullable' if the pointer may be null
 : note: insert '_Nonnull' if the pointer should never be null
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                   ^
 char    *fgetln(FILE *, size_t *);
                               ^
                                _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:6::448/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: 466:35: :52: note: ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);warninginsert '_Nullable' if the pointer may be null

 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                                   ^
                                                     _Nullable
 char    *fgetln(FILE *, size_t *);
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                   ^
                                                     _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:__const char *fmtcheck(const char *, const char *);
 :448:                                  ^46552
 ::6: :52: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:35:note:  note:  note: insert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null
 : insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be null
 char    *fgetln(FILE *, size_t *);

        ^
          _Nullable 
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                   ^
                                                     _Nonnull
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                   ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465
                                                     _Nonnull
 :6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448::448:__const char *fmtcheck(const char *, const char *);82: warning note: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                  ^
                                   _Nullable
 :82: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^
 insert '_Nonnull' if the pointer should never be null
 char    *fgetln(FILE *, size_t *);
        ^ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
          _Nonnull 

                                                                                 ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h466::466:
 3535: note: :448:82insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 448::note __const char *fmtcheck(const char *, const char *);
                                  ^82:: 
 note                                   _Nonnull
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:49: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : insert '_Nullable' if the pointer may be nullssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^
 __const char *fmtcheck(const char *, const char *);warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                                                                   _Nullable
 __const char *fmtcheck(const char *, const char *);
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448:                                  ^82/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                                                                 ^
 :466:49: 
 : notenote: insert '_Nullable' if the pointer may be null
                                                                                   _Nullable
 __const char *fmtcheck(const char *, const char *);
                                                ^: insert '_Nonnull' if the pointer should never be null

                                                 _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:448
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:
                                                                                   _Nonnull82: note: 466:35:49insert '_Nonnull' if the pointer should never be null
 : note: : insert '_Nonnull' if the pointer should never be null
 note: insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:21: __const char *fmtcheck(const char *, const char *);
 ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
                                                                                 ^
                                                                                   _Nonnull__const char *fmtcheck(const char *, const char *);
                                  ^
                                                ^
                                                 _Nonnull

                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning: 466:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h14: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));:warning:21: 466: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :35: __const char *fmtcheck(const char *, const char *);
                    ^

 notewarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:21: noteFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));             ^
 : 
                    ^
 : insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:21: note__const char *fmtcheck(const char *, const char *);
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));: insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466                    ^
                      _Nullable                                  ^
                                   _NonnullFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                    ^:


                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:49: warning: 14: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 449/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h__const char *fmtcheck(const char *, const char *);
 :                                                ^:21:note note: : 
 449:insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null21: note: 
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                    ^
                      _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h__const char *fmtcheck(const char *, const char *);
             ^
               _Nullable 
 :466:49:
 insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 note: :449:67: warninginsert '_Nullable' if the pointer may be nullFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                    ^
 : 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:14: note:                       _NonnullFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));__const char *fmtcheck(const char *, const char *);

                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:67insert '_Nonnull' if the pointer should never be null

 :__const char *fmtcheck(const char *, const char *);
             ^
               _Nonnull 
                                                                   ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hwarning: :                                                 _Nullablepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 467

 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 :18: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:                                                                  ^49/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::  :449:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]67: 

 int      fpurge(FILE *);
                     ^
 note: insert '_Nonnull' if the pointer should never be null
 note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:467:18__const char *fmtcheck(const char *, const char *);
                                                ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:67: :note: insert '_Nullable' if the pointer may be null

                                                 _Nonnull
 note: insert '_Nullable' if the pointer may be null

 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                                                  ^int      fpurge(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466
                                                                    _Nullable

 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));:                     ^
 14
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                                                  ^
                                                                    _Nullable
 : :449:67: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                      _Nullable449:67:__const char *fmtcheck(const char *, const char *);

             ^
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));::467
 466                                                                  ^
 ::18: note                                                                    _Nonnull
 14FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 : note:                                                                   ^
                                                                    _Nonnull
 : insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      fpurge(FILE *);
 __const char *fmtcheck(const char *, const char *);
             ^
               _Nullable 
 :                     ^FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));449
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
     ^
                      _Nonnull:6: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449
 :: :466pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:22:6FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 : note:  warning:      ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 14: note: insert '_Nullable' if the pointer may be nullvoid     setbuffer(FILE *, char *, int);
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:6: __const char *fmtcheck(const char *, const char *);
             ^FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^
               _Nonnull 
 note: 
                        ^
       _Nullable 
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:467:18: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:6warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: note: insert '_Nonnull' if the pointer should never be null
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h


       _Nullable 
 int      fpurge(FILE *);
                     ^
 FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^
       _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:449:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:468:467:618: note: insert '_Nonnull' if the pointer should never be null
 :: note: insert '_Nullable' if the pointer may be null
 :22:FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^
        _Nonnull 
 note: int      fpurge(FILE *);
                     ^
                      _Nullableinsert '_Nullable' if the pointer may be null27:
 
 void     setbuffer(FILE *, char *, int);
                        ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:27: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h467:18: notewarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: insert '_Nonnull' if the pointer should never be null

 int      fpurge(FILE *);
                     ^
                      _Nonnull

 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                          ^
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:22                          ^
 468:450:27:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::450:27:  note: insert '_Nonnull' if the pointer should never be null
 : 22: void     setbuffer(FILE *, char *, int);notewarning: 
                        ^
                         _Nonnull
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote:void     setbuffer(FILE *, char *, int);
 : insert '_Nullable' if the pointer may be null
 insert '_Nullable' if the pointer may be null
 468:30: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));void     setbuffer(FILE *, char *, int);
                                ^

                          ^
                        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :468:30:                           _Nullable

 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     setbuffer(FILE *, char *, int);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :450::                                ^
                                 _Nullable
 468:                          ^
                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:2722: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note: :450:: 27:insert '_Nullable' if the pointer may be null
 468 note: :insert '_Nonnull' if the pointer should never be nullvoid     setbuffer(FILE *, char *, int);
 30
                        ^
 : insert '_Nonnull' if the pointer should never be nullFILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));note                         _Nullable

                          ^
                           _Nonnull

 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                           ^:450:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:insert '_Nonnull' if the pointer should never be null
                           _Nonnull
 2822: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :note: insert '_Nonnull' if the pointer should never be null:450void     setbuffer(FILE *, char *, int);
 :28:                                ^
 warning: 
                                 _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void     setbuffer(FILE *, char *, int);
                        ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h warning: 22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :468: warning: :450:28: note: insert '_Nullable' if the pointer may be null
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :30: warningFILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                           ^
                             _Nullable 

 :                            ^int      setlinebuf(FILE *);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                         ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:void     setbuffer(FILE *, char *, int);
 28: note: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:22
                                ^
 : note: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be nullint      setlinebuf(FILE *);
                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:28: note
 468:30/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                           ^
                             _Nonnull : note: : insert '_Nullable' if the pointer may be null

 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));:
                           ^450:44
                             _Nullable 
 : warning22: : notevoid     setbuffer(FILE *, char *, int);
                                ^
                                 _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 30FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 : int      setlinebuf(FILE *);                                           ^
 note
                         ^
                          _Nonnull
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid     setbuffer(FILE *, char *, int);
                                ^
 ::                                 _Nonnull
 450:450:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:2844::469: note: 22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470 note: :21:insert '_Nonnull' if the pointer should never be null 
 : warninginsert '_Nullable' if the pointer may be null
 warningFILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 : :                            ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                             _Nonnull 
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));


                                           ^
                                             _Nullable int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);int      setlinebuf(FILE *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                         ^

 450:44: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::469
 450:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 44:22:                        ^
 : note: insert '_Nonnull' if the pointer should never be nullnote: insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
                                           ^
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));470:21
 int      setlinebuf(FILE *);:                                           ^ 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450
 note:                          ^
                          _Nullable
                                             _Nonnull 
 :44: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:22: note: insert '_Nonnull' if the pointer should never be null
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));int      setlinebuf(FILE *);
                         ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                           ^                          _Nonnull
 :                                             _Nullable 

 450:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:44: note: insert '_Nonnull' if the pointer should never be nullFILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^470:

                         _Nullable
     ^

 21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:6:FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);

 note:                         ^insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

                                           ^
                                             _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:21: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:6:: 470FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 warning: : insert '_Nullable' if the pointer may be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :
     ^
       _Nullable 
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^
                         _Nullable
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:6: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null
 :470:21: 21
 :note:  note: insert '_Nonnull' if the pointer should never be null
 FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));insert '_Nonnull' if the pointer should never be null

     ^
       _Nonnull 
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^
                         _Nonnull                        ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461450/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h22: warning: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 21: warningint      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
 :6: note: insert '_Nullable' if the pointer may be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                         ^FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));extern __const char *__const sys_errlist[];
 :470     ^:

 22:                    ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

       _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461:21/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:450:6:: note: insert '_Nonnull' if the pointer should never be null
 470
 :22: note: : noteinsert '_Nullable' if the pointer may be null
 :                          ^
 insert '_Nullable' if the pointer may be null
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^
                           _Nullable
 extern __const char *__const sys_errlist[];
                    ^
                      _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h470:FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
 2222: note: insert '_Nullable' if the pointer may be null
     ^:461int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^
                           _Nullable::
 note21: : 
 noteinsert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h       _Nonnull 
 :470:int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^
 : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:461                           _Nonnull
 :21: warning22: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hextern __const char *__const sys_errlist[];
                    ^
 : note: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null
 470:
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);47:extern __const char *__const sys_errlist[];: warning
 461:                         ^: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                           _Nonnull

                    ^
 21int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);                      _Nonnull /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470
                                                  ^
 : note: insert '_Nullable' if the pointer may be null
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hextern __const char *__const sys_errlist[];:47
 :470                    ^

                      _Nullable :47:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463: warning:  notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : insert '_Nullable' if the pointer may be null
 20/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);::int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
 461
                                                  ^
 :21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                                  ^
                                                    _Nullable :int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);470note:
 47: note
                       ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 470
 :47:insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
 :20: : int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);                                                  ^
                                                  ^
                                                    _Nullableinsert '_Nonnull' if the pointer should never be null


 note: insert '_Nullable' if the pointer may be null
                                                    _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:47: int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);extern __const char *__const sys_errlist[];
                    ^note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 
                      _Nonnull 
 insert '_Nonnull' if the pointer should never be null471:24: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 warning
                       ^
 : int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                        _Nullable


                                                  ^
                                                    _Nonnull
 463:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:20FILE    *zopen(const char *, const char *, int);20:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                          ^
 note: :471:insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:24:471int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);:24
 : note: insert '_Nullable' if the pointer may be null                       ^
                        _Nonnull
 warning: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: FILE    *zopen(const char *, const char *, int);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                          ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                           _Nullable
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 FILE    *zopen(const char *, const char *, int);
                          ^
 :463:21: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                       ^
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :471:24:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hint      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 ::                        ^
 463 471:20:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote:463:21: note: insert '_Nullable' if the pointer may be null
 : 24: note: note: int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);insert '_Nullable' if the pointer may be null
 : 
                        ^insert '_Nullable' if the pointer may be nullinsert '_Nonnull' if the pointer should never be null
                          _Nullable

 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                       ^
                        _Nullable
 FILE    *zopen(const char *, const char *, int);
                          ^
                           _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *zopen(const char *, const char *, int);
 :463                          ^:20:471: note: 24: insert '_Nonnull' if the pointer should never be null

                           _Nonnull
 463int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);note: insert '_Nonnull' if the pointer should never be null
                       ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                        _NonnullFILE    *zopen(const char *, const char *, int);
                          ^
 :21::471                            _Nonnull
 :note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:: 47138: :warning
 : 38/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:
 insert '_Nonnull' if the pointer should never be null
 463:FILE    *zopen(const char *, const char *, int);
                                        ^21:  int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);

                        ^
                          _Nonnullwarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471: 
 :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 38: noteint      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463
 : :
 insert '_Nullable' if the pointer may be nullFILE    *zopen(const char *, const char *, int);46
 : FILE    *zopen(const char *, const char *, int);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:                                        ^

                                         _Nullable

                                        ^
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:38: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:4621: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::note471insert '_Nonnull' if the pointer should never be null: insert '_Nullable' if the pointer may be null note: 

 insert '_Nullable' if the pointer may be null
 FILE    *zopen(const char *, const char *, int);
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);:int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 38                                        ^
                                         _Nonnull                        ^
                                                 ^
                                                   _Nullable: note
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :471:6:insert '_Nullable' if the pointer may be null warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :
 FILE    *zopen(const char *, const char *, int);463
                          _Nullable
        ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE    *zopen(const char *, const char *, int);:
                                        ^
                                         _Nullable
 46346: note: insert '_Nonnull' if the pointer should never be null:21:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: :471:6: insert '_Nonnull' if the pointer should never be null
 note
 : insert '_Nullable' if the pointer may be null
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                                                 ^
                                                   _Nonnull
 int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                        ^
                          _Nonnull
 FILE    *zopen(const char *, const char *, int);
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463471          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:46::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: 38warning471: ::note: : 464pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 6: note: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null:int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]FILE    *zopen(const char *, const char *, int);


 FILE    *zopen(const char *, const char *, int);
                                        ^
                                         _Nonnull
                                                 ^
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471char    *ctermid_r(char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
                        ^::463:46: note6: :477:26
 : warning: : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]


 FILE    *funopen(const void *,
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:22: note: int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);FILE    *zopen(const char *, const char *, int);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h        ^
 insert '_Nullable' if the pointer may be null
 :477:26: char    *ctermid_r(char *);note
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: insert '_Nullable' if the pointer may be null
                                                 ^
 :471:6
                        ^:FILE    *funopen(const void *,
                                                   _Nullable
                            ^
                         _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:463:46 note: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nullable' if the pointer may be null
 : note: 464:22: FILE    *zopen(const char *, const char *, int);note: insert '_Nonnull' if the pointer should never be null                             _Nullable
 insert '_Nonnull' if the pointer should never be null


        ^char    *ctermid_r(char *);
                        ^
                         _Nonnull
          _Nullable 

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
 26/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:                                                 ^ :note: insert '_Nonnull' if the pointer should never be null
 :
 471:6                                                   _Nonnull
 FILE    *funopen(const void *,
                            ^
 : note                             _Nonnull
 : insert '_Nonnull' if the pointer should never be null
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 :char    *ctermid_r(char *);char    *ctermid_r(char *);FILE    *zopen(const char *, const char *, int);478:41

                        ^

 : warning        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464
          _Nonnull 
 :22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: :: 477:26: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warningnote                 int (* _Nullable)(void *, char *, int),: : insert '_Nullable' if the pointer may be null
        ^char    *ctermid_r(char *);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 FILE    *funopen(const void *,
                            ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:6:                                        ^                        ^
                         _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477
 note: :
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *ctermid_r(char *);
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:464:22478:4126::        ^ 
          _Nullable note: 
 insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: note: insert '_Nonnull' if the pointer should never be null
 FILE    *funopen(const void *,char    *ctermid_r(char *);:                 int (* _Nullable)(void *, char *, int),

                            ^
                                        ^                             _Nullable


                                         _Nullable
 464:6: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:26: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                        ^
                         _Nonnull
 :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *funopen(const void *,
                            ^
                             _Nonnull478:41char    *ctermid_r(char *);
 :        ^464: note
 :
          _Nonnull 
 6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:41:: : insert '_Nonnull' if the pointer should never be nullwarning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness] warning465:: 19:

 warning: char    *ctermid_r(char *);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *, char *, int),
                 int (* _Nullable)(void *, char *, int),
                                        ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

        ^
 char    *fgetln(FILE *, size_t *);
                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:                                        ^:
                                         _Nonnull
 465:41: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:19478::464:49 note:                  int (* _Nullable)(void *, char *, int),
                                        ^::6:insert '_Nullable' if the pointer may be null
                                         _Nullable 

 warningchar    *fgetln(FILE *, size_t *);
 :  notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :                  int (* _Nullable)(void *, char *, int),
                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:41insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478
 :49: char    *ctermid_r(char *);note                     ^
                      _Nullable
        ^
          _Nullable 
 : : insert '_Nullable' if the pointer may be null

 note:                  int (* _Nullable)(void *, char *, int),/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465
                                                ^
                                                 _Nullable
 insert '_Nonnull' if the pointer should never be null
 :464:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:49:  note: insert '_Nonnull' if the pointer should never be nullnote
 : char    *ctermid_r(char *);
        ^
          _Nonnull insert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *, char *, int),
 :19:                  int (* _Nullable)(void *, char *, int),
                                                ^note
                                        ^:                                                  _Nonnullinsert '_Nonnull' if the pointer should never be null


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 char    *fgetln(FILE *, size_t *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465::                                         _Nonnull479:41
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: 47819warning:: 
                     ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 49: warning                      _Nonnull
                 int (* _Nullable)(void *, const char *, int),:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                        ^

                 int (* _Nullable)(void *, char *, int),
                                                ^
 char    *fgetln(FILE *, size_t *);
 :29/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::                     ^
 479:41warning:478:49/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :::465  note: :19:char    *fgetln(FILE *, size_t *);insert '_Nullable' if the pointer may be null note: 
 insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null

                 int (* _Nullable)(void *, const char *, int),char    *fgetln(FILE *, size_t *);                               ^

                 int (* _Nullable)(void *, char *, int),

                     ^
                      _Nullable
                                        ^
                                                ^
                                                 _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465                                         _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::19:465:29

 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:char    *fgetln(FILE *, size_t *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note478:                               ^
                                _Nullable4149
 :: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:29:insert '_Nonnull' if the pointer should never be null: insert '_Nonnull' if the pointer should never be null note: insert '_Nonnull' if the pointer should never be null

 
                 int (* _Nullable)(void *, char *, int),                 int (* _Nullable)(void *, const char *, int),note: 

                                        ^insert '_Nonnull' if the pointer should never be null                                                ^
                                                 _Nonnull
 char    *fgetln(FILE *, size_t *);
                     ^

                                         _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:55: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *fgetln(FILE *, size_t *);
                               ^warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :479                      _Nonnull
                 int (* _Nullable)(void *, const char *, int),
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465                                _Nonnull:

                                                      ^
 41/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::: warning29: warning: 479:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 55char    *fgetln(FILE *, size_t *);
 warning: : : note: insert '_Nullable' if the pointer may be null
        ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *, const char *, int),
                                                      ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]char    *fgetln(FILE *, size_t *);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:6                                                       _Nullable
                 int (* _Nullable)(void *, const char *, int),
                                        ^

                               ^
 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h479:55: note: insert '_Nonnull' if the pointer should never be null:char    *fgetln(FILE *, size_t *);
        ^29
          _Nullable :

 : note: insert '_Nullable' if the pointer may be null
 479char    *fgetln(FILE *, size_t *);
                               ^
                                _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:6: note                 int (* _Nullable)(void *, const char *, int),/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 :465:: insert '_Nonnull' if the pointer should never be null
 41:29char    *fgetln(FILE *, size_t *);                                                      ^: note: 
                                                       _Nonnull
 insert '_Nonnull' if the pointer should never be null

 char    *fgetln(FILE *, size_t *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480
                               ^
        ^:44
          _Nonnull 
 : warning:                                 _Nonnull 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                 fpos_t (* _Nullable)(void *, fpos_t, int),:note: 
                                           ^
 465:35:insert '_Nullable' if the pointer may be null: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480:44: 6note: insert '_Nullable' if the pointer may be null
 : 
                 fpos_t (* _Nullable)(void *, fpos_t, int),warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: 
                                           ^
 __const char *fmtcheck(const char *, const char *);
                                            _Nullable
                                  ^
                 int (* _Nullable)(void *, const char *, int),
                                        ^
                                         _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466char    *fgetln(FILE *, size_t *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480
        ^:35:44
 :: note: insert '_Nonnull' if the pointer should never be null
 note                 fpos_t (* _Nullable)(void *, fpos_t, int),
                                           ^: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:465:6
                                            _Nonnull
 : __const char *fmtcheck(const char *, const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 note: insert '_Nullable' if the pointer may be null:
                                  ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hchar    *fgetln(FILE *, size_t *);
                                   _Nullable
 481::479:        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h41: note41: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                 int (* _Nullable)(void *));
          _Nullable :466                                        ^:

 35: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:41:465: __const char *fmtcheck(const char *, const char *);
 insert '_Nonnull' if the pointer should never be null                                  ^: 
 6:                                    _Nonnullnote: 
 noteinsert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *, const char *, int),
                                        ^
                                         _Nonnull: 
 insert '_Nullable' if the pointer may be nullchar    *fgetln(FILE *, size_t *);
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466466
                 int (* _Nullable)(void *));
 :35: warning:                                         ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
                                         _Nullable479__const char *fmtcheck(const char *, const char *);
                                  ^
 49:
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:35: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h__const char *fmtcheck(const char *, const char *);
                                  ^:
                                   _Nullable55
 __const char *fmtcheck(const char *, const char *);:481::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 :                                                ^ 41
 : warning: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:466: insert '_Nonnull' if the pointer should never be null

 466:49                 int (* _Nullable)(void *));                 int (* _Nullable)(void *, const char *, int),
 :35: note: 
                                                      ^insert '_Nonnull' if the pointer should never be null:                                        ^
 note: 
                                         _Nonnull
 __const char *fmtcheck(const char *, const char *);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6:                                   ^insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning: 479__const char *fmtcheck(const char *, const char *);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 FILE    *funopen(const void *,
        ^:55:                                                ^

                                                  _Nullable
                                   _Nonnull
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                 int (* _Nullable)(void *, const char *, int),
                                                      ^
                                                       _Nullable
 :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477466:49::466:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:47949: note: :55: note: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 6                  int (* _Nullable)(void *, const char *, int),:__const char *fmtcheck(const char *, const char *);
                                                ^

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note:                                                  _Nonnullinsert '_Nullable' if the pointer may be null__const char *fmtcheck(const char *, const char *);
                                                ^


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE    *funopen(const void *,
        ^                                                      ^466:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h          _Nullable 
 :14
 466:                                                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::480:44: 49: 477warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning:note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 : 6__const char *fmtcheck(const char *, const char *);insert '_Nullable' if the pointer may be null
 : note: 
             ^
 __const char *fmtcheck(const char *, const char *);insert '_Nonnull' if the pointer should never be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hFILE    *funopen(const void *,:466
                 fpos_t (* _Nullable)(void *, fpos_t, int),                                                ^

        ^                                                 _Nullable:14: 
          _Nonnull 
 note
                                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:49: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note: insert '_Nonnull' if the pointer should never be null
 : insert '_Nullable' if the pointer may be null
 __const char *fmtcheck(const char *, const char *);
                                                ^
                                                 _Nonnull
 __const char *fmtcheck(const char *, const char *);
             ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480
               _Nullable 466:44:
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:14: note                 fpos_t (* _Nullable)(void *, fpos_t, int),
                                           ^
 : :                                            _Nullableinsert '_Nonnull' if the pointer should never be null14

 __const char *fmtcheck(const char *, const char *);
             ^
               _Nonnull 
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:467:18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]__const char *fmtcheck(const char *, const char *);
             ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480:44: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466:14: note:                  fpos_t (* _Nullable)(void *, fpos_t, int),

                                           ^
                                            _Nonnull
 int      fpurge(FILE *);
                     ^
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:41: warning: __const char *fmtcheck(const char *, const char *);
             ^
               _Nullable 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *));
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:466::467:14: note                                        ^
 : insert '_Nonnull' if the pointer should never be null
 __const char *fmtcheck(const char *, const char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481             ^
               _Nonnull :18
 41: note: insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *));
 : note: insert '_Nullable' if the pointer may be null
 int      fpurge(FILE *);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:467:18: note: insert '_Nonnull' if the pointer should never be null
 int      fpurge(FILE *);
                     ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void     setbuffer(FILE *, char *, int);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:467:18: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 468:int      fpurge(FILE *);                                        ^
                                         _Nullable

                     ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:4122: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hnote: insert '_Nullable' if the pointer may be null note: :467:18: noteinsert '_Nonnull' if the pointer should never be null
 : insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *));
                                        ^
 int      fpurge(FILE *);

                     ^
                      _Nullable
 void     setbuffer(FILE *, char *, int);
                        ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:467:18: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:note: insert '_Nonnull' if the pointer should never be null
                                         _Nonnull
 int      fpurge(FILE *);
                     ^
                      _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]468:22468:22:: note warning: : 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *funopen(const void *,
        ^
 insert '_Nonnull' if the pointer should never be null
 void     setbuffer(FILE *, char *, int);
                        ^
 void     setbuffer(FILE *, char *, int);
                         _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                        ^
 :477:6: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:22FILE    *funopen(const void *,
 :
 note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:30:        ^
          _Nullable 

 void     setbuffer(FILE *, char *, int);
                        ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:FILE    *funopen(const void *,
 468 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :22: note: insert '_Nonnull' if the pointer should never be null
        ^
          _Nonnull 
 void     setbuffer(FILE *, char *, int);
                        ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:30: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void     setbuffer(FILE *, char *, int);
                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:30: note: insert '_Nullable' if the pointer may be null
 void     setbuffer(FILE *, char *, int);
                                ^
                                 _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:30: note: insert '_Nonnull' if the pointer should never be null
 void     setbuffer(FILE *, char *, int);
                                ^
                                 _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      setlinebuf(FILE *);
                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:22: note: insert '_Nullable' if the pointer may be null
 int      setlinebuf(FILE *);
                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:22: note: insert '_Nonnull' if the pointer should never be null
 int      setlinebuf(FILE *);
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:21: note: insert '_Nullable' if the pointer may be null
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:21: note: insert '_Nonnull' if the pointer should never be null
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:22: note: insert '_Nullable' if the pointer may be null
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^
                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:22: note: insert '_Nonnull' if the pointer should never be null
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^
                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:47: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                  ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:47: note: insert '_Nullable' if the pointer may be null
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                  ^
                                                    _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:47: note: insert '_Nonnull' if the pointer should never be null
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                  ^
                                                    _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:24: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *zopen(const char *, const char *, int);
                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:24: note: insert '_Nullable' if the pointer may be null
 FILE    *zopen(const char *, const char *, int);
                          ^
                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:24: note: insert '_Nonnull' if the pointer should never be null
 FILE    *zopen(const char *, const char *, int);
                          ^
                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:38: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *zopen(const char *, const char *, int);
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:38: note: insert '_Nullable' if the pointer may be null
 FILE    *zopen(const char *, const char *, int);
                                        ^
                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:38: note: insert '_Nonnull' if the pointer should never be null
 FILE    *zopen(const char *, const char *, int);
                                        ^
                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *zopen(const char *, const char *, int);
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:6: note: insert '_Nullable' if the pointer may be null
 FILE    *zopen(const char *, const char *, int);
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:6: note: insert '_Nonnull' if the pointer should never be null
 FILE    *zopen(const char *, const char *, int);
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:26: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *funopen(const void *,
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:26: note: insert '_Nullable' if the pointer may be null
 FILE    *funopen(const void *,
                            ^
                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:26: note: insert '_Nonnull' if the pointer should never be null
 FILE    *funopen(const void *,
                            ^
                             _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:41: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *, char *, int),
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:41: note: insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *, char *, int),
                                        ^
                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:41: note: insert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *, char *, int),
                                        ^
                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:49: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *, char *, int),
                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:49: note: insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *, char *, int),
                                                ^
                                                 _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:49: note: insert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *, char *, int),
                                                ^
                                                 _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:41: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *, const char *, int),
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:41: note: insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *, const char *, int),
                                        ^
                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:41: note: insert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *, const char *, int),
                                        ^
                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:55: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *, const char *, int),
                                                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:55: note: insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *, const char *, int),
                                                      ^
                                                       _Nullable
 void     setbuffer(FILE *, char *, int);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479:55: note: insert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *, const char *, int),
                                                      ^
                                                       _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480:44: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 fpos_t (* _Nullable)(void *, fpos_t, int),
                                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480:44: note: insert '_Nullable' if the pointer may be null
                 fpos_t (* _Nullable)(void *, fpos_t, int),
                                           ^
                                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480:44: note: insert '_Nonnull' if the pointer should never be null
                 fpos_t (* _Nullable)(void *, fpos_t, int),
                                           ^
                                            _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:41: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                 int (* _Nullable)(void *));
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:41: note: insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *));
                                        ^
                                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:41: note: insert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *));
                                        ^
                                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *funopen(const void *,
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6: note: insert '_Nullable' if the pointer may be null
 FILE    *funopen(const void *,
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6: note: insert '_Nonnull' if the pointer should never be null
 FILE    *funopen(const void *,
        ^
          _Nonnull 
 In file included from Parser/listnode.c:4:
 In file included from ./Include/pgenheaders.h:10:
 In file included from ./Include/Python.h:34:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:139:25: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 double   atof(const char *);
                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:139:25: note: insert '_Nullable' if the pointer may be null
 double   atof(const char *);
                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:139:25: note: insert '_Nonnull' if the pointer should never be null
 double   atof(const char *);
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:140:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      atoi(const char *);
                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:140:22: note: insert '_Nullable' if the pointer may be null
 int      atoi(const char *);
                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:140:22: note: insert '_Nonnull' if the pointer should never be null
 int      atoi(const char *);
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:141:23: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 long     atol(const char *);
                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:141:23: note: insert '_Nullable' if the pointer may be null
 long     atol(const char *);
                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:141:23: note: insert '_Nonnull' if the pointer should never be null
 long     atol(const char *);
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:144:20: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
         atoll(const char *);
                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:144:20: note: insert '_Nullable' if the pointer may be null
         atoll(const char *);
                          ^
                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:144:20: note: insert '_Nonnull' if the pointer should never be null
         atoll(const char *);
                          ^
                           _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:26: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:26: note: insert '_Nullable' if the pointer may be null
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^
                              _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:26: note: insert '_Nonnull' if the pointer should never be null
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^
                              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:45: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:45: note: insert '_Nullable' if the pointer may be null
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                                               ^
                                                 _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:45: note: insert '_Nonnull' if the pointer should never be null
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                                               ^
                                                 _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:59: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:59: note: insert '_Nullable' if the pointer may be null
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                 ^
                                                                  _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:59: note: insert '_Nonnull' if the pointer should never be null
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                 ^
                                                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:73: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:73: note: insert '_Nullable' if the pointer may be null
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                               ^
                                                                                _Nullable
 In file included from Parser/grammar1.c:4:
 In file included from ./Include/Python.h:34:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:73: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:139:
                                ^
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:468:30:25: warning note: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 double   atof(const char *);
                         ^
 void     setbuffer(FILE *, char *, int);
                                ^
                                 _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:139:25:            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                               ^468:30 note: :
 insert '_Nullable' if the pointer may be null                                                                                 _Nonnull
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146void     setbuffer(FILE *, char *, int);
                                ^
                                 _Nonnull
 :6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:void    *bsearch(const void *__key, const void *__base, size_t __nel,
 22: warning
        ^
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      setlinebuf(FILE *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:6:                         ^
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid    *bsearch(const void *__key, const void *__base, size_t __nel,double   atof(const char *);
                         ^
                          _Nullable

        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:139:25: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:insert '_Nonnull' if the pointer should never be null
 146:6: note: insert '_Nonnull' if the pointer should never be null
 :469:22: note: insert '_Nullable' if the pointer may be null
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
        ^
          _Nonnull 
 int      setlinebuf(FILE *);
                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hdouble   atof(const char *);
                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:469:22: note:                           _Nonnull
 :148:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
 int      setlinebuf(FILE *);
 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:140:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

        ^
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148:6: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:: insert '_Nullable' if the pointer may be null
 21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
        ^
          _Nullable 
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148:6: note: int      atoi(const char *);
                         ^
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:140:22: note: insert '_Nullable' if the pointer may be null
 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
        ^
          _Nonnull 
 int      atoi(const char *);
                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:140:22: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:int      atoi(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h151
 :                         ^
                          _Nonnull
 :17: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:470void     free(void *);
                   ^:21: note
 141:23: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:151:: long     atol(const char *);17insert '_Nullable' if the pointer may be null
 : note: insert '_Nullable' if the pointer may be null
 void     free(void *);
                   ^
                    _Nullable
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                        ^
                         _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:151:17: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470
 note:21:: insert '_Nonnull' if the pointer should never be null
                         ^
 void     free(void *);
                   ^
                    _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:141:23: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be nulllong     atol(const char *);
                         ^
                          _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);152:25: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 141:                        ^
 23: note: 
                         _Nonnull
 char    *getenv(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hinsert '_Nonnull' if the pointer should never be null
                           ^
 :470:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:25: note: insert '_Nullable' if the pointer may be null

 char    *getenv(const char *);
                           ^
                            _Nullablelong     atol(const char *);int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:25: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:22char    *getenv(const char *);144:
 :20:                           ^
                            _Nonnull
 note: insert '_Nullable' if the pointer may be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
         atoll(const char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152                          ^
 :6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *getenv(const char *);
        ^
 :144:20: note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:6int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^

                           _Nullable
         atoll(const char *);
                          ^
                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:22: note: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:144 note: :20: insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null
 char    *getenv(const char *);
        ^
          _Nullable          atoll(const char *);insert '_Nonnull' if the pointer should never be null

 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                         ^
                           _Nonnull

                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                           _Nonnull
 :152:6: note: insert '_Nonnull' if the pointer should never be null
 :47char    *getenv(const char *);
        ^
          _Nonnull 
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                  ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:47: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:160:: insert '_Nullable' if the pointer may be null
 6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                  ^
                                                    _Nullable
 void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:470:47:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146note160:26::6: warning:  : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]noteinsert '_Nonnull' if the pointer should never be null
 : insert '_Nullable' if the pointer may be null
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^

          _Nullable 
 int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                  ^
                                                    _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:160:6: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:26: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:note:23: 471:24:warning:  : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 int      mblen(const char *__s, size_t __n);
                          ^
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^
                              _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:23: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:26: note: insert '_Nonnull' if the pointer should never be null
 int      mblen(const char *__s, size_t __n);
                          ^
                            _Nullable 
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^
                              _Nonnull 
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]In file included from ./Programs/python.c
 :3:
 :FILE    *zopen(const char *, const char *, int);
 2345::                          ^
 In file included from ./Include/Python.h:34:
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      mblen(const char *__s, size_t __n);
                          ^
                            _Nonnull 
 :471:24warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:: note: insert '_Nullable' if the pointer may be null
 26:139FILE    *zopen(const char *, const char *, int);
 : :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 25:                          ^
                           _Nullable
 void    *bsearch(const void *__key, const void *__base, size_t __nel,: warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h                                               ^size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);warning

                          ^
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:45:double   atof(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:: note471
 : insert '_Nullable' if the pointer may be null
                         ^
 26: void    *bsearch(const void *__key, const void *__base, size_t __nel,
                                               ^note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);

 139:25:                           ^
                            _Nullable24:                                                  _Nullable note

 : insert '_Nullable' if the pointer may be null
 double   atof(const char *);
                         ^
                          _Nullablenote
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:139:25insert '_Nonnull' if the pointer should never be null:26
 : note: insert '_Nonnull' if the pointer should never be null /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 note: insert '_Nonnull' if the pointer should never be null
 :146:45:double   atof(const char *);
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);FILE    *zopen(const char *, const char *, int); 
 note:                          ^

                          ^                          ^
 insert '_Nonnull' if the pointer should never be null
                            _Nonnull                          _Nonnull
 void    *bsearch(const void *__key, const void *__base, size_t __nel,

                                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                           _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                                                 _Nonnull 162:52:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h warning:: 
 471:38:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: warning: 140:22:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 :warning: size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                                                    ^
 147:59: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]52: 
 note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]            size_t __width, int (* _Nonnull __compar)(const void *, const void *));FILE    *zopen(const char *, const char *, int);
                                        ^

 insert '_Nullable' if the pointer may be null
 int      atoi(const char *);
                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:471:size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                                                                 ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h

 :140:22:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:59 note:                                                     ^
                                                      _Nullable
 : noteinsert '_Nullable' if the pointer may be null
 38: int      atoi(const char *);
                         ^
                          _Nullable: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162
 : insert '_Nullable' if the pointer may be null
 :52: note: insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:140:22: note: insert '_Nonnull' if the pointer should never be null
 FILE    *zopen(const char *, const char *, int);int      atoi(const char *);size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);

                                                    ^
                                        ^                                                      _Nonnull

                         ^
                          _Nonnull
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:21:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:141

                                         _Nullable
 :                                                                  ^23warning
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 long     atol(const char *);
                         ^
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);:471:38: 
                                                                  _Nullablenote                        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:141

 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hFILE    *zopen(const char *, const char *, int);:::163:21:
                                        ^
 23                                          _Nonnull
 147note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::471 ::: insert '_Nullable' if the pointer may be null
 note: 59: int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);note6: : insert '_Nonnull' if the pointer should never be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be null

                        ^
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                          _Nullable

                                                                 ^
                                                                  _Nonnull
 FILE    *zopen(const char *, const char *, int);
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:long     atol(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147                         ^21::73: note: insert '_Nonnull' if the pointer should never be null
 :
 471 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                        ^warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:
 6
                          _Nullable
                          _Nonnull
 : note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h163:
 46: FILE    *zopen(const char *, const char *, int);                                                                               ^
 warning:141:
 :         ^23pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 : note:           _Nullable :insert '_Nonnull' if the pointer should never be null
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                                                 ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hlong     atol(const char *);147:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163::7347146
 :                         ^ note
                          _Nonnull
 : insert '_Nullable' if the pointer may be null:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::
 note: : note: insert '_Nonnull' if the pointer should never be null144
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);insert '_Nullable' if the pointer may be nullFILE    *zopen(const char *, const char *, int);
                                                 ^
                                                   _Nullable


        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h            size_t __width, int (* _Nonnull __compar)(const void *, const void *));:20:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477
                                                                               ^
                                                                                _Nullable
 :163:46::26 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: 147note: insert '_Nonnull' if the pointer should never be null:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 :          atoll(const char *);
                          ^int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]73: note: insert '_Nonnull' if the pointer should never be null

                                                 ^FILE    *funopen(const void *,

                            ^

                                                   _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:144/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:26: :20:            size_t __width, int (* _Nonnull __compar)(const void *, const void *));note:  note: :
 27insert '_Nullable' if the pointer may be null:insert '_Nullable' if the pointer may be null                                                                               ^

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                                                                _Nonnull
 FILE    *funopen(const void *,
                            ^
                             _Nullableint      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         atoll(const char *);:                             ^

 146:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid    *bsearch(const void *__key, const void *__base, size_t __nel,164
                          ^
                           _Nullable
 :
        ^
 27: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146::int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);477:26: note: insert '_Nonnull' if the pointer should never be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h6                             ^
                              _Nullable:FILE    *funopen(const void *,

                            ^144: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164
                             _Nonnull
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:47827        ^
          _Nullable :
 : :41: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h20:: note: insert '_Nonnull' if the pointer should never be null
 warning146         atoll(const char *);
                          ^
                           _Nonnull

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:                 int (* _Nullable)(void *, char *, int),:int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 626
                             ^: note: insert '_Nonnull' if the pointer should never be null

                              _Nonnull
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164::void    *bsearch(const void *__key, const void *__base, size_t __nel,28 
        ^
          _Nonnull 
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 148:6:478:warningint      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0); 41: note: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null: 

                              ^
                 int (* _Nullable)(void *, char *, int),
                                        ^
                                         _Nullablevoid    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:28:
        ^
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^:int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                              ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                                _Nullable 
 :478
 148:6: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:28::41: note:  note: insert '_Nonnull' if the pointer should never be null
 note: insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:                 int (* _Nullable)(void *, char *, int),
                                        ^int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);26
                              ^: 
                                _Nonnull 

                                         _Nonnull
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:478:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hvoid    *bsearch(const void *__key, const void *__base, size_t __nel,49:        ^: 
                            ^165:18: warning
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void     qsort(void *__base, size_t __nel, size_t __width,

          _Nullable                     ^
                 int (* _Nullable)(void *, char *, int),

                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148:6:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h note: insert '_Nonnull' if the pointer should never be null                              _Nullable 165
 :18: 
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);:insert '_Nullable' if the pointer may be null
 478:
 49: note: 146:void     qsort(void *__base, size_t __nel, size_t __width,
 26: noteinsert '_Nullable' if the pointer may be null
                    ^
                      _Nullable                  int (* _Nullable)(void *, char *, int),
                                                ^

                                                 _Nullable
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165:18:         ^void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h
          _Nonnull 
 note: :478:49: note: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
                 int (* _Nullable)(void *, char *, int),
                              _Nonnull 
 void     qsort(void *__base, size_t __nel, size_t __width,/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:                                                ^
                                                 _Nonnull
                    ^
 151                      _Nonnull :
 17: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:
 warning: 479:41: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :void     free(void *);16645: :
 43:                  int (* _Nullable)(void *, const char *, int),
 warning                                        ^warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                   ^
            int (* _Nonnull __compar)(const void *, const void *));
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:151:17: note                                                 ^
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hvoid    *bsearch(const void *__key, const void *__base, size_t __nel,::
                                               ^
 166:43: void     free(void *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
                   ^
                    _Nullable
 note: 479:146:insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:151:1741: :            int (* _Nonnull __compar)(const void *, const void *));
 note: note:                                                  ^
                                                  _Nullable
 insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null
 void     free(void *);
                   ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:                 int (* _Nullable)(void *, const char *, int),
                                        ^
                                         _Nullable
 45
                    _Nonnull
 43:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:479::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:  note: insert '_Nonnull' if the pointer should never be null
 41: note: insert '_Nonnull' if the pointer should never be null152            int (* _Nonnull __compar)(const void *, const void *));

                                                 ^
 :25:note: insert '_Nullable' if the pointer may be null
                                                  _Nonnull
                 int (* _Nullable)(void *, const char *, int), void    *bsearch(const void *__key, const void *__base, size_t __nel,

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166                                        ^
                                         _Nonnull:warning:                                                ^
 57: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]            int (* _Nonnull __compar)(const void *, const void *));/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h

 :char    *getenv(const char *);479
 :55                                                 _Nullable : warning
                                                               ^

                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:45:: : note: 166pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nonnull' if the pointer should never be null

 :57: note: insert '_Nullable' if the pointer may be null
                 int (* _Nullable)(void *, const char *, int),
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h            int (* _Nonnull __compar)(const void *, const void *));
 :void    *bsearch(const void *__key, const void *__base, size_t __nel,
                                                      ^152
                                                               ^
                                                                _Nullable:25:
                                               ^
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h57:                                                 _Nonnull insert '_Nullable' if the pointer may be null
 :
 479 char    *getenv(const char *);:note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:5955            int (* _Nonnull __compar)(const void *, const void *));:
                           ^
                            _Nullable: 
                                                               ^note: insert '_Nullable' if the pointer may be null
 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h            size_t __width, int (* _Nonnull __compar)(const void *, const void *));

                                                                _Nonnull
 :152                 int (* _Nullable)(void *, const char *, int),
                                                      ^                                                                 ^

                                                       _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:20: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hwarning::479: :55: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:note147: 25: insert '_Nonnull' if the pointer should never be null
 note
 : :59:                 int (* _Nullable)(void *, const char *, int),
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
 note: insert '_Nullable' if the pointer may be null                      ^
                                                      ^
                                                       _Nonnull
 insert '_Nonnull' if the pointer should never be null

 char    *getenv(const char *);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480:            size_t __width, int (* _Nonnull __compar)(const void *, const void *));:4420:                           ^:

                            _Nonnull warning note: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                                                 ^                 fpos_t (* _Nullable)(void *, fpos_t, int),
                                           ^

 insert '_Nullable' if the pointer may be null
                                                                  _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:480:44: note: insert '_Nullable' if the pointer may be null
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);                 fpos_t (* _Nullable)(void *, fpos_t, int),
                                           ^

                                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:6:
                      ^
                        _Nullable 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *getenv(const char *);
        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h::
 168:147:59::20:480/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: note: 152:6: note: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be nullchar    *getenv(const char *);:44
 : note:  note: void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);

        ^
          _Nullable insert '_Nonnull' if the pointer should never be null                      ^insert '_Nonnull' if the pointer should never be null


                        _Nonnull 

            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                 ^
                                                                  _Nonnull
                 fpos_t (* _Nullable)(void *, fpos_t, int),
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                                           ^
                                            _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 ::152168:6: warning: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 6: 147:73note:: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.hvoid    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);:481:41:insert '_Nonnull' if the pointer should never be null warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 
        ^char    *getenv(const char *);
        ^
                 int (* _Nullable)(void *));
          _Nonnull 
                                        ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:41: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                               ^
 :160:6insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::168 :
 147:736: warningnote                 int (* _Nullable)(void *));
 : insert '_Nullable' if the pointer may be null
                                        ^
 : void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
        ^
 : note: insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
          _Nullable 
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                               ^void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^

                                                                                _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:6/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:160: :note: 
                                         _Nullable
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:481:6:41: note: insert '_Nonnull' if the pointer should never be null
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);73:
        ^
 note:                  int (* _Nullable)(void *));
          _Nonnull 
 insert '_Nullable' if the pointer may be null
                                        ^
                                         _Nonnull
 void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:160:6: note: 477::6:27: : warning: insert '_Nonnull' if the pointer should never be null pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 note: insert '_Nonnull' if the pointer should never be null
 void    *malloc(size_t __size) __result_use_check __alloc_size(1);
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                           ^
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                               ^
                                                                                _Nonnull
        ^
          _Nonnull 
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: ::6: warning: 170/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]27:
 161:23:void    *bsearch(const void *__key, const void *__base, size_t __nel,
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 FILE    *funopen(const void *,:note: insert '_Nullable' if the pointer may be null        ^ 
 warning: 
        ^double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                           ^

                            _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6: note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:6: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      mblen(const char *__s, size_t __n);:insert '_Nullable' if the pointer may be null
 170FILE    *funopen(const void *,:note27: note: : 
 insert '_Nullable' if the pointer may be null
        ^                          ^
          _Nullable 

 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdio.h:477:6: notedouble   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::                             _Nonnull
 insert '_Nonnull' if the pointer should never be null161:
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
        ^23
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:
 FILE    *funopen(const void *,
        ^ :note: 
          _Nonnull 
 35: warninginsert '_Nullable' if the pointer may be null
          _Nullable 
 int      mblen(const char *__s, size_t __n);
                          ^
                            _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:6: note: insert '_Nonnull' if the pointer should never be null: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:

 void    *bsearch(const void *__key, const void *__base, size_t __nel,
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);23        ^
                                   ^
 : note: insert '_Nonnull' if the pointer should never be null
 int      mblen(const char *__s, size_t __n);
                          ^
          _Nonnull 

                            _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148170:35::: 162:266: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:note
 : insert '_Nullable' if the pointer may be null
 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
        ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148:6: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:26: note: insert '_Nullable' if the pointer may be null
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                   ^
                                    _Nullable
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                          ^
                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:35: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:26: note: insert '_Nonnull' if the pointer should never be null
 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
        ^
          _Nullable 
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                          ^
                            _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:52:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148:6: note: insert '_Nonnull' if the pointer should never be null

 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                   ^        ^
          _Nonnull 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                                                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:151:17: warning:162: 
                                    _Nonnull:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 52void     free(void *);
 :
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:                   ^
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:151:17size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);36:
                                                    ^
 : warning                                                      _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                    ^ note: 
 insert '_Nullable' if the pointer may be null
 void     free(void *);
                   ^
                    _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:36/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:
 52: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:151:17:size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);: note: insert '_Nullable' if the pointer may be null

                                                    ^
                                                      _Nonnull
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                    ^
                                     _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:36: int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t); note
 note: insert '_Nonnull' if the pointer should never be null
 : insert '_Nonnull' if the pointer should never be null
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);                        ^void     free(void *);

                                    ^
                                     _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:21
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::                   ^
                    _Nonnull
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:152:25:int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                        ^
 26: warning:                            _Nullablepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:21: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: warning171:: insert '_Nonnull' if the pointer should never be null
 26: note: insert '_Nullable' if the pointer may be null
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                        ^
                          _Nonnull
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                           ^
                            _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *getenv(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:26: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163
                           ^
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:46::25: warning float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 : note                           ^
                            _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:34: int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);: insert '_Nullable' if the pointer may be null
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *getenv(const char *);
                           ^
                            _Nullable
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                   ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:25: 
                                                 ^
 note: insert '_Nonnull' if the pointer should never be null
 char    *getenv(const char *);
                           ^
                            _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:6: :46: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : insert '_Nullable' if the pointer may be null
 char    *getenv(const char *);
        ^
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                                                 ^
                                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:6: note: insert '_Nullable' if the pointer may be null
 171:34: note: char    *getenv(const char *);
        ^
          _Nullable 
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:46:6:  note: notefloat    strtof(const char *, char **) __DARWIN_ALIAS(strtof);insert '_Nonnull' if the pointer should never be null
 : insert '_Nonnull' if the pointer should never be null
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                                                 ^
                                                   _Nonnull
 char    *getenv(const char *);
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:27: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                             ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:160:6: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:warning
                                   ^
                                    _Nullable
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:164:27: note: insert '_Nullable' if the pointer may be null
 void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                             ^
                              _Nullable
 34: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:27:float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                                   ^
                                    _Nonnull
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:35: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                             ^
 :160:6: note: insert '_Nullable' if the pointer may be null
                              _Nonnull
 void    *malloc(size_t __size) __result_use_check __alloc_size(1);float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:28: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
        ^
          _Nullable 

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:160int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                              ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:35: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:28: note: float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 insert '_Nullable' if the pointer may be null
 :6: note: insert '_Nonnull' if the pointer should never be null
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                              ^
                                _Nullable 
 void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^
          _Nonnull                                     ^
                                     _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:28: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:23: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                              ^
 int      mblen(const char *__s, size_t __n);
                          ^
                                _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:23: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165:18: warning: int      mblen(const char *__s, size_t __n);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                          ^
                            _Nullable 
 void     qsort(void *__base, size_t __nel, size_t __width,
                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165:18: 23
 : note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171int      mblen(const char *__s, size_t __n);
 :note: insert '_Nullable' if the pointer may be null
                          ^
                            _Nonnull 
 void     qsort(void *__base, size_t __nel, size_t __width,
                    ^
                      _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:26:35:  warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165:18: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: insert '_Nonnull' if the pointer should never be null
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                          ^
 note: insert '_Nonnull' if the pointer should never be null
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                    ^
                                     _Nonnullvoid     qsort(void *__base, size_t __nel, size_t __width,
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162
                    ^
                      _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:25: warning: :26:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: insert '_Nullable' if the pointer may be null
 long     strtol(const char *__str, char **__endptr, int __base);
                           ^
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                          ^
                            _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:25: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166long     strtol(const char *__str, char **__endptr, int __base);
                           ^
 :43:162:26 warning: :                             _Nullable 
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                          ^
                            _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162            int (* _Nonnull __compar)(const void *, const void *));25: 
                                                 ^
 :52: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);note: 
                                                    ^
 43: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:52:             int (* _Nonnull __compar)(const void *, const void *));insert '_Nonnull' if the pointer should never be null

                                                 ^
                                                  _Nullable
 long     strtol(const char *__str, char **__endptr, int __base);
                           ^
                             _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:43: note: insert '_Nullable' if the pointer may be null
 note: insert '_Nonnull' if the pointer should never be null
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                                                    ^
                                                      _Nullable
            int (* _Nonnull __compar)(const void *, const void *));
                                                 ^
                                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:52/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:38: : note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:57: warning: size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                                                    ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                                      _Nonnull

 long     strtol(const char *__str, char **__endptr, int __base);
                                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:21: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
            int (* _Nonnull __compar)(const void *, const void *));
                                                               ^
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:57: note: insert '_Nullable' if the pointer may be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 :163:21:             int (* _Nonnull __compar)(const void *, const void *));
                                                               ^
                                                                _Nullable
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:57:38int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t); : note: note
 insert '_Nullable' if the pointer may be null: insert '_Nonnull' if the pointer should never be null

            int (* _Nonnull __compar)(const void *, const void *));
 long     strtol(const char *__str, char **__endptr, int __base);
                                        ^
                                         _Nullable
                        ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:21                                                               ^
                                                                _Nonnull
 38: note: insert '_Nonnull' if the pointer should never be null
 long     strtol(const char *__str, char **__endptr, int __base);
                                        ^
                                         _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:: insert '_Nonnull' if the pointer should never be null
 39: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                        ^
                          _Nonnull
 long     strtol(const char *__str, char **__endptr, int __base);
                                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:46: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:39: note168int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
 : insert '_Nullable' if the pointer may be null
 :20: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                                 ^
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
                      ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168long     strtol(const char *__str, char **__endptr, int __base);46:20:: note note: : 
 insert '_Nullable' if the pointer may be nullinsert '_Nullable' if the pointer may be null                                         ^
                                           _Nullable 

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hvoid    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);

                      ^
                        _Nullable 
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                                                 ^
                                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:20: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:46: note: insert '_Nonnull' if the pointer should never be null
 :172:39:int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                                                 ^
                                                   _Nonnull note: 
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hvoid    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
                      ^insert '_Nonnull' if the pointer should never be null

                        _Nonnull 
 long     strtol(const char *__str, char **__endptr, int __base);
                                         ^
                                           _Nonnull 
 :164:27: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
        ^
         strtold(const char *, char **);
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:6
 : note: insert '_Nullable' if the pointer may be null
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
        ^                             ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
          _Nullable 
 174:In file included from /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hParser/acceler.c:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164168:13::
 22In file included from ./Include/pgenheaders.h:1027: :6::
 note: In file included from note:./Include/Python.h: :insert '_Nonnull' if the pointer should never be null
 note: 34void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);insert '_Nullable' if the pointer may be nullinsert '_Nullable' if the pointer may be null

        ^
 :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 139         strtold(const char *, char **);int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);

          _Nonnull                              ^
                            ^
                             _Nullable                              _Nullable

 :25: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hdouble   atof(const char *);
 :170::164
 27: warning:27:: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                         ^:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 174:22: note: 
 insert '_Nonnull' if the pointer should never be nullnote: double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);

                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:139:25: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hdouble   atof(const char *);
                         ^
                          _Nullable
 insert '_Nonnull' if the pointer should never be null
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                             ^
                              _Nonnull:170:27
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:         strtold(const char *, char **);164: note: 28
 :: 139:warning25                            ^insert '_Nullable' if the pointer may be null: 

                             _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);:174
                           ^
 :                            _Nullable 30: warningint      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                              ^
 : 
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hdouble   atof(const char *);
                         ^
                          _Nonnull
 :164:28/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: note: insert '_Nullable' if the pointer may be null:140:22: warning
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      atoi(const char *);
                         ^
         strtold(const char *, char **);
                                    ^int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                              ^
                                _Nullable :27: 
 note
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:30:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hdouble   strtod(const char *, char **) __DARWIN_ALIAS(strtod);140
 :                           ^
                            _Nonnull
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:35:22:164:28insert '_Nullable' if the pointer may be null :: warning:  
 notenote         strtold(const char *, char **);
                                    ^: : insert '_Nonnull' if the pointer should never be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                              ^
                                     _Nullable                                _Nonnull 
 int      atoi(const char *);
                                   ^

                         ^
                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165:18:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:35::140  note: warning: insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
 22:                                   ^
 note: insert '_Nonnull' if the pointer should never be null
 void     qsort(void *__base, size_t __nel, size_t __width,
                    ^

                                    _Nullable
 int      atoi(const char *);
                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:30: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:18: :141:23note: note: warninginsert '_Nonnull' if the pointer should never be null170:35
 : :         strtold(const char *, char **);
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null 
 long     atol(const char *);
                         ^
 void     qsort(void *__base, size_t __nel, size_t __width,note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:141:23insert '_Nonnull' if the pointer should never be null
 :                                    ^
 note: 
                                     _Nonnull
 insert '_Nullable' if the pointer may be null
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);long     atol(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                                   ^

                         ^
                          _Nullable
                                    _Nonnull:                    ^
 174
                      _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:36:
 :141:23: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:warning:165:1831:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
  warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);:         strtold(const char *, char **);
 note
                                     ^
 : note                                     ^
 : insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 void     qsort(void *__base, size_t __nel, size_t __width,
 long     atol(const char *);
                         ^
                          _Nonnull
                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:::144:20: warning:                       _Nonnull 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 170:36:         atoll(const char *);
                          ^
 174:31: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: insert '_Nullable' if the pointer may be null166:43note: 
 : warninginsert '_Nullable' if the pointer may be null
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
         strtold(const char *, char **);
                                     ^                                    ^
                                     _Nullable: 
                                      _Nullablepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :144:
 20
 : note: insert '_Nullable' if the pointer may be null
            int (* _Nonnull __compar)(const void *, const void *));
                                                 ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h170:         atoll(const char *);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166
                          ^
 36:                           _Nullable174:43:
 : note:  /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:144:noteinsert '_Nonnull' if the pointer should never be null:20:31: : insert '_Nullable' if the pointer may be null
 note: 
 insert '_Nonnull' if the pointer should never be null
            int (* _Nonnull __compar)(const void *, const void *));
                                                 ^
                                                  _Nullable
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                    ^         strtold(const char *, char **);
 
                                     ^                                     _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 note: insert '_Nonnull' if the pointer should never be null

                                      _Nonnull
         atoll(const char *);
                          ^
                           _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:26
 : warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:166:43:177:22: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :26: warning:float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                           ^ note: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be nullwarning: 
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^            int (* _Nonnull __compar)(const void *, const void *));
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                                 ^

                                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 146:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         strtoll(const char *__str, char **__endptr, int __base);
 :166:57:171::                             ^warning2626: :note:  note: insert '_Nullable' if the pointer may be null
 insert '_Nullable' if the pointer may be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                            ^            int (* _Nonnull __compar)(const void *, const void *));

                                                               ^
                              _Nullable 
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:26::                           ^
                            _Nullable

 22: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171: 26:note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h : insert '_Nonnull' if the pointer should never be null
         strtoll(const char *__str, char **__endptr, int __base);
 :166:57void    *bsearch(const void *__key, const void *__base, size_t __nel,note: insert '_Nonnull' if the pointer should never be null                            ^:
                              _Nullable 
 
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
            int (* _Nonnull __compar)(const void *, const void *));

                           ^177                            ^

                                                               ^
                                                                _Nullable                            _Nonnull                              _Nonnull 

 :22:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:34insert '_Nonnull' if the pointer should never be null: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 166
                                   ^
         strtoll(const char *__str, char **__endptr, int __base);
                            ^
                              _Nonnull 
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:35:57:: :146note171::45:: insert '_Nonnull' if the pointer should never be null
  warning34:             int (* _Nonnull __compar)(const void *, const void *));
 : notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warning:                                                                ^
                                                                _Nonnull
 : insert '_Nullable' if the pointer may be null

 void    *bsearch(const void *__key, const void *__base, size_t __nel,
                                               ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                   ^
         strtoll(const char *__str, char **__endptr, int __base);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:
                                    _Nullable:20                                         ^

 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:146:17734::45 note: void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);35: note
 :                      ^insert '_Nonnull' if the pointer should never be null note: : insert '_Nullable' if the pointer may be null

 insert '_Nullable' if the pointer may be null         strtoll(const char *__str, char **__endptr, int __base);
                                         ^
                                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:35: note: float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                   ^
                                    _Nonnull
 20insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:         strtoll(const char *__str, char **__endptr, int __base);void    *bsearch(const void *__key, const void *__base, size_t __nel,:
                                         ^
                                               ^171:35
 :                                                 _Nullable   warningnote: insert '_Nullable' if the pointer may be null

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
                      ^

                                          _Nonnull

                        _Nullable float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                    ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:35: note: insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:20146: note: 
 :177insert '_Nonnull' if the pointer should never be null45::
 36: warningfloat    strtof(const char *, char **) __DARWIN_ALIAS(strtof); : void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note: 
                                    ^
 insert '_Nonnull' if the pointer should never be null
                                     _Nullable

                      ^
                        _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171void    *bsearch(const void *__key, const void *__base, size_t __nel,
                                               ^
                                                 _Nonnull 
 :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168         strtoll(const char *__str, char **__endptr, int __base);
                                          ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::6
 147: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:35: 
 note59: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: insert '_Nonnull' if the pointer should never be null
 177void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]        ^

 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                    ^
                                     _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168::            size_t __width, int (* _Nonnull __compar)(const void *, const void *));636:: note:  note: insert '_Nullable' if the pointer may be null
 insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:         strtoll(const char *__str, char **__endptr, int __base);
                                          ^                                                                 ^172
                                            _Nullable 
 :void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
 25: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:59/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:
        ^:36
 long     strtol(const char *__str, char **__endptr, int __base);: note: insert '_Nonnull' if the pointer should never be null 
 note
 : insert '_Nullable' if the pointer may be null
          _Nullable 
         strtoll(const char *__str, char **__endptr, int __base);
                                          ^
                                            _Nonnull 
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
                                                                 ^
                                                                  _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:
 6: note: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h180:22: :                           ^

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
        ^
          _Nonnull 
 147:59:         strtoul(const char *__str, char **__endptr, int __base);
                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::172            size_t __width, int (* _Nonnull __compar)(const void *, const void *));180:2227
 :: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 25: double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                           ^
 note: note:                                                                  ^
                                                                  _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170:27insert '_Nullable' if the pointer may be null: 
 insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:147:73: warning         strtoul(const char *__str, char **__endptr, int __base);:
 :  note: long     strtol(const char *__str, char **__endptr, int __base);insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                           ^
                             _Nullable 
            size_t __width, int (* _Nonnull __compar)(const void *, const void *));                            ^
                              _Nullable 
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:25
 : note                           ^                                                                               ^
                            _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h

 :180:22: note: insert '_Nonnull' if the pointer should never be null
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         strtoul(const char *__str, char **__endptr, int __base);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                            ^::170long     strtol(const char *__str, char **__endptr, int __base);
                           ^147::27:
 73 note
                             _Nonnull 
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:38:                              _Nonnull 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
 : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hlong     strtol(const char *__str, char **__endptr, int __base);insert '_Nullable' if the pointer may be null
 :                                        ^
                           ^

                            _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h            size_t __width, int (* _Nonnull __compar)(const void *, const void *));180/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170
                                                                               ^
 :35::                                                                                _Nullable :172:
 38: note: insert '_Nullable' if the pointer may be nullwarning35/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: 
 : :long     strtol(const char *__str, char **__endptr, int __base);
                                        ^
 147:73: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                         _Nullablenote: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
         strtoul(const char *__str, char **__endptr, int __base);
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                   ^

                                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h170:::3535            size_t __width, int (* _Nonnull __compar)(const void *, const void *));
 172:: note: insert '_Nullable' if the pointer may be null
                                                                               ^
                                                                                _Nonnull
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                   ^
                                    _Nullable38:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: note
 : insert '_Nonnull' if the pointer should never be null
 :146:6: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hlong     strtol(const char *__str, char **__endptr, int __base);
 :warning                                        ^: 170:35: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 void    *bsearch(const void *__key, const void *__base, size_t __nel,
        ^                                         _Nonnullnote
 : note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172insert '_Nullable' if the pointer may be null
 :39:double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);         strtoul(const char *__str, char **__endptr, int __base); 
 warning
                                   ^
                                    _Nonnull
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:

                                         ^170:
                                          _Nullable
 36:long     strtol(const char *__str, char **__endptr, int __base);
                                         ^
 :146warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 172:39/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: note6::  insert '_Nullable' if the pointer may be null
 note: :double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);insert '_Nullable' if the pointer may be null
 long     strtol(const char *__str, char **__endptr, int __base);

                                    ^180                                         ^
                                           _Nullable 
 :
 void    *bsearch(const void *__key, const void *__base, size_t __nel,
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:39:35/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:146:6::  notenote:  : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:insert '_Nonnull' if the pointer should never be null
 170long     strtol(const char *__str, char **__endptr, int __base);note:36:
 void    *bsearch(const void *__key, const void *__base, size_t __nel,: 
                                         ^
                                           _Nonnull 
 insert '_Nonnull' if the pointer should never be null
 note: insert '_Nullable' if the pointer may be null
         strtoul(const char *__str, char **__endptr, int __base);
                                         ^
                                          _Nonnull        ^
          _Nonnull 
 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180                                    ^
                                     _Nullable
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 36: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :174:22: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:         strtoul(const char *__str, char **__endptr, int __base);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]6:170:36
 : :         strtold(const char *, char **);                                          ^ 
                            ^note: insert '_Nonnull' if the pointer should never be null


 double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                    ^
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                                      _Nonnull
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :174:22: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nullable' if the pointer may be null:void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
 180
        ^:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 36:         strtold(const char *, char **);
                            ^ :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:148:6:171:26                             _Nullable
 : warningnote: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:22: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be null: note
 : insert '_Nonnull' if the pointer should never be null

 note: float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);         strtold(const char *, char **);
                            ^
                           ^
         strtoul(const char *__str, char **__endptr, int __base);

 insert '_Nullable' if the pointer may be null                                          ^                             _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 ::174171
 :                                            _Nullable :30
 : 26: void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
 note: insert '_Nullable' if the pointer may be null        ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:

          _Nullable 
 180:36: note: insert '_Nonnull' if the pointer should never be nullfloat    strtof(const char *, char **) __DARWIN_ALIAS(strtof);warning: 
                           ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                            _Nullable         strtoul(const char *__str, char **__endptr, int __base);
                                          ^
         strtold(const char *, char **);
                                            _Nonnull 
 :148:6: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171insert '_Nonnull' if the pointer should never be null
 :26: note: insert '_Nonnull' if the pointer should never be null

                                    ^
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 void    *calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174        ^
          _Nonnull :30
 : note                            _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:23: warning: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:15134: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :17: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
         strtold(const char *, char **);void     free(void *);
                   ^float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);


                                   ^                                    ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                     _Nullable151

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::         strtoull(const char *__str, char **__endptr, int __base);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h17
                             ^
 171::: 174/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:3430: note:note: :insert '_Nullable' if the pointer may be null
 23: notevoid     free(void *);
                   ^: 
                    _Nullable
 insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
         strtoull(const char *__str, char **__endptr, int __base);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hfloat    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                   ^
                             ^: :                                    _Nullable
                               _Nullable 

 151:17: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be nullvoid     free(void *);
                   ^
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 171:34                    _Nonnull: 
         strtold(const char *, char **);
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152: insert '_Nonnull' if the pointer should never be null
 ::183:float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                   ^
                                    ^
 23:                                      _Nonnull
                                    _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote: 25:
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:         strtoull(const char *__str, char **__endptr, int __base);
                             ^warning174: ::35pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 char    *getenv(const char *);: warning: 31                               _Nonnull 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
                            ^183warning: 
 :36: warning
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:25: note
         strtold(const char *, char **);
 : insert '_Nullable' if the pointer may be null
                                    ^
                                     ^
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:35: note: char    *getenv(const char *);
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174
 insert '_Nullable' if the pointer may be null:
 31: note: insert '_Nullable' if the pointer may be null
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                    ^
                            _Nullable         strtold(const char *, char **);
                                     _Nullable

                                     ^
                                      _Nullable
         strtoull(const char *__str, char **__endptr, int __base);
                                          ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h171:31:35152:25:: note note: : insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);          strtold(const char *, char **);
 note: insert '_Nonnull' if the pointer should never be null
 183
 char    *getenv(const char *);
                           ^
                            _Nonnull                                     ^
                                    ^
                                     _Nonnull:
                                      _Nonnull36

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152:6: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:char    *getenv(const char *); note: 
        ^
 :177/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:25: :insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 22: :         strtoull(const char *__str, char **__endptr, int __base);warning: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                          ^
 long     strtol(const char *__str, char **__endptr, int __base);
 152:
                                           _Nullable
         strtoll(const char *__str, char **__endptr, int __base);
                            ^                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 6
 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:char    *getenv(const char *);:172:25:
        ^
 183           _Nullable 
 :note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:152 note: :long     strtol(const char *__str, char **__endptr, int __base);
 6                           ^insert '_Nullable' if the pointer may be null:

                             _Nullable 
 36         strtoll(const char *__str, char **__endptr, int __base);
                            ^
 : note                              _Nullable 
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *getenv(const char *);
 ::172:25: note: insert '_Nonnull' if the pointer should never be null177        ^

 :long     strtol(const char *__str, char **__endptr, int __base);:           _Nonnull 
 22
 :                           ^
                             _Nonnull 
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:38:          strtoull(const char *__str, char **__endptr, int __base); warning
                                          ^
 note: insert '_Nonnull' if the pointer should never be null
 :                                            _Nonnull         strtoll(const char *__str, char **__endptr, int __base);
                            ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                              _Nonnull 
 long     strtol(const char *__str, char **__endptr, int __base);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177                                        ^
 :::183:37: 160:6:35/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:warning warning: :  warning: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 172:38: notevoid    *malloc(size_t __size) __result_use_check __alloc_size(1);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: insert '_Nullable' if the pointer may be null
        ^
         strtoull(const char *__str, char **__endptr, int __base);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:160:6: note:          strtoll(const char *__str, char **__endptr, int __base);
                                         ^insert '_Nullable' if the pointer may be null
 long     strtol(const char *__str, char **__endptr, int __base);

 void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^
          _Nullable 

                                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:
                                        ^
                                         _Nullable
 35: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         strtoll(const char *__str, char **__endptr, int __base);
                                         ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 :160:6172:: note                                          _Nullable
 38: :37/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote: :177: :35:insert '_Nonnull' if the pointer should never be null 
 note: insert '_Nonnull' if the pointer should never be null
 note: insert '_Nullable' if the pointer may be null: insert '_Nonnull' if the pointer should never be nulllong     strtol(const char *__str, char **__endptr, int __base);
                                        ^void    *malloc(size_t __size) __result_use_check __alloc_size(1);
        ^


          _Nonnull 
         strtoull(const char *__str, char **__endptr, int __base);
                                           ^         strtoll(const char *__str, char **__endptr, int __base);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:23: warning: 
                                             _Nullable 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                         _Nonnull
                                         ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 39183int      mblen(const char *__s, size_t __n);
                          ^
 :37: 
                                          _Nonnull
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be null:161::23:
 177:36: warningnote:  warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nullable' if the pointer may be nulllong     strtol(const char *__str, char **__endptr, int __base);

                                         ^
 int      mblen(const char *__s, size_t __n);         strtoull(const char *__str, char **__endptr, int __base);
                                           ^         strtoll(const char *__str, char **__endptr, int __base);


                                             _Nonnull 
                          ^
                            _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:39: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:161:23: 
 long     strtol(const char *__str, char **__endptr, int __base);
                                         ^
                                           _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:195                                          ^
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172insert '_Nonnull' if the pointer should never be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:
 :3639int      mblen(const char *__s, size_t __n);: note: insert '_Nullable' if the pointer may be null

 24         strtoll(const char *__str, char **__endptr, int __base);                          ^
                            _Nonnull : note: : warning

 :                                           ^insert '_Nonnull' if the pointer should never be null

                                            _Nullable 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:26:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      system(const char *) __DARWIN_ALIAS_C(system); long     strtol(const char *__str, char **__endptr, int __base);
                                         ^
                                           _Nonnull 
 warning: 
                           ^
 :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h177size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:::36: note:                           ^
 insert '_Nonnull' if the pointer should never be null
 174:22: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:         strtoll(const char *__str, char **__endptr, int __base);
                                          ^
 195:162:                                             _Nonnull :26: note: 24insert '_Nullable' if the pointer may be null

 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                          ^
         strtold(const char *, char **);:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                            _Nullable note

                            ^
 :180:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 :174:          strtoul(const char *__str, char **__endptr, int __base);
 insert '_Nullable' if the pointer may be null                            ^162:
 22:
 note: insert '_Nullable' if the pointer may be null
 int      system(const char *) __DARWIN_ALIAS_C(system);
                           ^
                            _Nullable:         strtold(const char *, char **);
                            ^26:
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180
                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:195:insert '_Nonnull' if the pointer should never be null:24/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h22: :
 174:22: note: size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);: 
 insert '_Nonnull' if the pointer should never be nullnote
                          ^
                            _Nonnull
         strtold(const char *, char **);
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be null:162int      system(const char *) __DARWIN_ALIAS_C(system);

 :52:         strtoul(const char *__str, char **__endptr, int __base);                            ^
                             _Nonnull
 warning: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                            ^
 174:30:size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);

                              _Nullable                                                     ^

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162:52: note: insert '_Nullable' if the pointer may be null                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:         strtold(const char *, char **);

                            _Nonnull

 180:22: note: insert '_Nonnull' if the pointer should never be null
 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                                                    ^
                                                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                                    ^         strtoul(const char *__str, char **__endptr, int __base);:

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:162                            ^199/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:23::
 174:52:                              _Nonnull  note warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : 
 :30: insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:35: warningsize_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);note: : 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
         strtoul(const char *__str, char **__endptr, int __base);size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
                                                    ^

                                                      _Nonnull
                       ^

                                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:163:199:21:          strtold(const char *, char **);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hwarning: 
                                    ^
 :180                                     _Nullable:
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 35: note: insert '_Nullable' if the pointer may be null
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:30: note         strtoul(const char *__str, char **__endptr, int __base);: 

                        ^insert '_Nonnull' if the pointer should never be null
                                         ^
                                          _Nullable23         strtold(const char *, char **);

 : note: insert '_Nullable' if the pointer may be null
                                    ^
                                     _Nonnullsize_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:35: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:insert '_Nonnull' if the pointer should never be null
 31: warning:          strtoul(const char *__str, char **__endptr, int __base);
                       ^
                                         ^
                                          _Nonnullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                         _Nullable

 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:199
 163::3621: : note: insert '_Nullable' if the pointer may be null
         strtold(const char *, char **);
 warningint      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                        ^
                                     ^
 23: note: : insert '_Nonnull' if the pointer should never be null                          _Nullablepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:31: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 :163:21: note
 note: : size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);insert '_Nonnull' if the pointer should never be null         strtoul(const char *__str, char **__endptr, int __base);
 insert '_Nullable' if the pointer may be null

                                          ^
 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
         strtold(const char *, char **);
                        ^
                       ^
                         _Nonnull
                                     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
                                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:36199:51/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 174:31: :note::                           _Nonnull
 insert '_Nullable' if the pointer may be null
 warning:  /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         strtoul(const char *__str, char **__endptr, int __base);
 :163:note: insert '_Nonnull' if the pointer should never be null
                                          ^
         strtold(const char *, char **);46:                                             _Nullable 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 warning:                                      ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hsize_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);                                      _Nonnull:
                                                   ^

 180:36: note: int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be null
 :177:22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::         strtoul(const char *__str, char **__endptr, int __base);
 163: 
                                          ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:199:51
                                            _Nonnull 
 warning: 46:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:: note: insert '_Nullable' if the pointer may be null         strtoll(const char *__str, char **__endptr, int __base);
 23:                             ^
 warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:         strtoull(const char *__str, char **__endptr, int __base);
                             ^
 size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
 22/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:23: note: insert '_Nullable' if the pointer may be null
 : note: insert '_Nullable' if the pointer may be null
                                                   ^
                                                     _Nullable         strtoull(const char *__str, char **__endptr, int __base);int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
                                                 ^
 note: insert '_Nullable' if the pointer may be null
                                                   _Nullable

                             ^
                               _Nullable 

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:199:51:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:23: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:note: insert '_Nonnull' if the pointer should never be null         strtoll(const char *__str, char **__endptr, int __base);

 note: 163                            ^         strtoull(const char *__str, char **__endptr, int __base);
 insert '_Nonnull' if the pointer should never be null
                              _Nullable 
 :46: size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
                                                   ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote:177

                             ^: :22:                                                     _Nonnull
 note: 
                               _Nonnull 
 insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:36: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         strtoll(const char *__str, char **__endptr, int __base);warning:200:int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 18: warning:                                                  ^
                                                   _Nonnull         strtoull(const char *__str, char **__endptr, int __base);

                                          ^

                            ^
                              _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:36::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]177:
 35:  notewarningint      wctomb(char *, wchar_t);
 : insert '_Nullable' if the pointer may be null164:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                     ^

         strtoll(const char *__str, char **__endptr, int __base);
                                         ^
         strtoull(const char *__str, char **__endptr, int __base);
                                          ^
                                           _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:200:18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h27: : warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :183:177:35:int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
                             ^
 :note: 36: noteinsert '_Nullable' if the pointer may be null
 note: : insert '_Nonnull' if the pointer should never be null
 int      wctomb(char *, wchar_t);
         strtoull(const char *__str, char **__endptr, int __base);
                                          ^insert '_Nullable' if the pointer may be null                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                                           _Nonnull
 164:
 27/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: note183:: insert '_Nullable' if the pointer may be null
         strtoll(const char *__str, char **__endptr, int __base);37: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                         ^
                                          _Nullable

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:200:int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);18:
          strtoull(const char *__str, char **__endptr, int __base);note:                              ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:35: note: insert '_Nonnull' if the pointer should never be null
                              _Nullableinsert '_Nonnull' if the pointer should never be null         strtoll(const char *__str, char **__endptr, int __base);

                                           ^


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      wctomb(char *, wchar_t);                                         ^
                                          _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h

                     ^
 ::164:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h183:37:                      _Nonnull
 note: insert '_Nullable' if the pointer may be null
 :177:36: warning:          strtoull(const char *__str, char **__endptr, int __base);
                                           ^
                                             _Nullable 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:20427: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 :183::3723         strtoll(const char *__str, char **__endptr, int __base);
 : : note:                                           ^
 insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:: warning: int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 36long     a64l(const char *);                             ^
                              _Nonnull
         strtoull(const char *__str, char **__endptr, int __base);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164

                         ^:
 :                                            ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                                             _Nonnull 28:note: insert '_Nullable' if the pointer may be null
 204:23         strtoll(const char *__str, char **__endptr, int __base);

                                          ^
                                            _Nullable  warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);:177:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:195
 36                              ^
 : : 24note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164:: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 28: note: insert '_Nullable' if the pointer may be null
 noteint      system(const char *) __DARWIN_ALIAS_C(system);
                           ^
 : insert '_Nonnull' if the pointer should never be null
 insert '_Nullable' if the pointer may be nullint      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:195
 long     a64l(const char *);
                         ^
                          _Nullable
         strtoll(const char *__str, char **__endptr, int __base);:24
                                          ^
                                            _Nonnull                               ^
                                _Nullable 

 : note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:164int      system(const char *) __DARWIN_ALIAS_C(system);
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 :                            _Nullable
 204/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h28:23:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:195:24: note:  insert '_Nonnull' if the pointer should never be nullnote:180: :22:
 : note insert '_Nonnull' if the pointer should never be nullint      system(const char *) __DARWIN_ALIAS_C(system);
                           ^
                            _Nonnull

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : insert '_Nonnull' if the pointer should never be null
         strtoul(const char *__str, char **__endptr, int __base);
 long     a64l(const char *);
                         ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                            ^199int      posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);

 :23: warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                              ^
                                _Nonnull 
 :size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
                       ^

                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:22: note: insert '_Nullable' if the pointer may be null
 :         strtoul(const char *__str, char **__endptr, int __base);
 199                            ^::
                              _Nullable 23: note: 18: insert '_Nullable' if the pointer may be null

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
                       ^
                         _Nullable
 206:29/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:22: note: void     qsort(void *__base, size_t __nel, size_t __width,/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 insert '_Nonnull' if the pointer should never be null
 : 199         strtoul(const char *__str, char **__endptr, int __base);
                            ^:warning23: note:                     ^

                              _Nonnull insert '_Nonnull' if the pointer should never be null
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */

                       ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:165/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h180:35::199                               ^
 18: :51:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206note: warning: :  warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null:size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
 29: note: insert '_Nullable' if the pointer may be null

                                                   ^
         strtoul(const char *__str, char **__endptr, int __base);void     qsort(void *__base, size_t __nel, size_t __width,char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                         ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:199:51: note: insert '_Nullable' if the pointer may be null


                    ^
                      _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
                                                   ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                               ^180::                                                     _Nullable
 165:3518
                                 _Nullable : note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:insert '_Nonnull' if the pointer should never be null
 199:51: void     qsort(void *__base, size_t __nel, size_t __width,
                    ^:
                      _Nonnull  

 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:43: warning         strtoul(const char *__str, char **__endptr, int __base);
                                         ^
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nonnull' if the pointer should never be null
                                          _Nullable
            int (* _Nonnull __compar)(const void *, const void *));
 size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);206:29/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:
                                                  ^
 :35: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be null
                                                   ^
                                                     _Nonnullnote         strtoul(const char *__str, char **__endptr, int __base);: :insert '_Nonnull' if the pointer should never be null


                                         ^
                                          _Nonnull
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:200:                                 _Nonnull 18/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 ::180 166warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 ::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h43:36206:46: int      wctomb(char *, wchar_t);
                     ^
 : note: : warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hwarning: insert '_Nullable' if the pointer may be null
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :            int (* _Nonnull __compar)(const void *, const void *));pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]200

                                                 ^
                                                  _Nullable
         strtoul(const char *__str, char **__endptr, int __base);char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                                ^
                                          ^:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h18: note: insert '_Nullable' if the pointer may be null

 :166:43int      wctomb(char *, wchar_t);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: note180:: :insert '_Nonnull' if the pointer should never be null                     ^3646: note: 
                      _Nullable
 insert '_Nullable' if the pointer may be null

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:200         strtoul(const char *__str, char **__endptr, int __base);
 ::                                          ^ note            int (* _Nonnull __compar)(const void *, const void *));

 :                                             _Nullable                                                  ^
 18: insert '_Nullable' if the pointer may be null
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */: 

                                                  _Nonnull
 :insert '_Nonnull' if the pointer should never be null                                                ^
                                                  _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h36
 : 
 note: insert '_Nonnull' if the pointer should never be null
 int      wctomb(char *, wchar_t);
                     ^
 :         strtoul(const char *__str, char **__endptr, int __base);
                      _Nonnull
                                          ^
                                            _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206:46: note: insert '_Nonnull' if the pointer should never be null166/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h23:57:: warning:204: :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 23
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 :            int (* _Nonnull __compar)(const void *, const void *));          strtoull(const char *__str, char **__endptr, int __base);
 warning
                                                               ^                             ^
 :                                                 ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                                                  _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:166:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hlong     a64l(const char *);:
 57: note206: :183:23: note                         ^insert '_Nullable' if the pointer may be null: insert '_Nullable' if the pointer may be null


 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:            int (* _Nonnull __compar)(const void *, const void *));6: 
         strtoull(const char *__str, char **__endptr, int __base);
 204                             ^
                               _Nullable 
                                                               ^
                                                                _Nullable
 :23:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote183:: :166:23: insert '_Nullable' if the pointer may be null57: note
 note: warninglong     a64l(const char *);
                         ^: insert '_Nonnull' if the pointer should never be null
 : insert '_Nonnull' if the pointer should never be null
            int (* _Nonnull __compar)(const void *, const void *));
                                                               ^

         strtoull(const char *__str, char **__endptr, int __base);
                                                                _Nonnull
                             ^
                               _Nonnull 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183:36: warningchar    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168:                          _Nullable
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 20: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:204/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::20623: note:          strtoull(const char *__str, char **__endptr, int __base);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                          ^

 insert '_Nonnull' if the pointer should never be null
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);:6:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                      ^ :183:
 long     a64l(const char *);note: insert '_Nullable' if the pointer may be null

                         ^
                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^
          _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:20: note36:: 206:29:
 warning: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                               ^
 note: insert '_Nullable' if the pointer may be null:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206:296: note: 
 : note         strtoull(const char *__str, char **__endptr, int __base);
                                          ^void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);

                                           _Nullable
                      ^
                        _Nullable 
 : insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:168char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                               ^
 :        ^
                                 _Nullable 
 20: note: insert '_Nonnull' if the pointer should never be null
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:207:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:36:: note: 206:29: note: void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
 insert '_Nonnull' if the pointer should never be null                      ^

                        _Nonnull 
 31: warning: array parameter is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness-on-arrays]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         strtoull(const char *__str, char **__endptr, int __base);:
 insert '_Nonnull' if the pointer should never be null
 168:6:double   erand48(unsigned short[3]);
                               ^ 
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                               ^warning
                                 _Nonnull 
 :                                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h

 :pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                           _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:207:206void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 :46: 183:37: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning: 31        ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:
         strtoull(const char *__str, char **__endptr, int __base);

 note: insert '_Nullable' if the array parameter may be null
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                                ^
 double   erand48(unsigned short[3]);
                               ^
                                _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:207:31:                                            ^
 :206168::note46: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::183:37: 6 note: insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
 :         strtoull(const char *__str, char **__endptr, int __base);insert '_Nonnull' if the array parameter should never be null char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                           ^
 note: insert '_Nullable' if the pointer may be null
                                                ^


                                                  _Nullable 
 double   erand48(unsigned short[3]);
                               ^
                                _Nonnull 
 void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
        ^
          _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
                                             _Nullable 
 206:46: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h208:note: 29:insert '_Nonnull' if the pointer should never be null:
 :183: char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */37: 
                                                ^
                                                  _Nonnull 
 168:note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: insert '_Nonnull' if the pointer should never be null
 6: warning:note206         strtoull(const char *__str, char **__endptr, int __base);: : :insert '_Nonnull' if the pointer should never be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 6: 
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */

                                           ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                               ^void    *realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);

        ^
          _Nonnull 

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208:29: notechar    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */                                             _Nonnull /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: :170

        ^:27:
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206:double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h6:195:24: warning: :insert '_Nullable' if the pointer may be null pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 note: int      system(const char *) __DARWIN_ALIAS_C(system);
 insert '_Nullable' if the pointer may be null
                           ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */

                               ^
 :27: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h                                 _Nullable 
 note:
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */195:24double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                           ^
                            _Nullable
 : note
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170        ^
          _Nullable :
 :208:29: 27/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206:6: note: insert '_Nullable' if the pointer may be null
 :insert '_Nonnull' if the pointer should never be null: int      system(const char *) __DARWIN_ALIAS_C(system);
                           ^note

 :                             _Nullable note: insert '_Nonnull' if the pointer should never be null

 insert '_Nonnull' if the pointer should never be null
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:195double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 :24                           ^
                            _Nonnull: 
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
                               ^
                                 _Nonnull 
 170:35: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:insert '_Nonnull' if the pointer should never be nulldouble   strtod(const char *, char **) __DARWIN_ALIAS(strtod);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h

 :208                                   ^
 207:31: int      system(const char *) __DARWIN_ALIAS_C(system);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:170
 warning: array parameter is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness-on-arrays]
 ::                           ^46
                            _Nonnull
 :35: note: insert '_Nullable' if the pointer may be null double   erand48(unsigned short[3]);
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]                                   ^199

                               ^:23:

 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */                                    _Nullable
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:207: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 170:35:size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
 31
                       ^
                                                ^
 : note: insert '_Nullable' if the array parameter may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:199:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208:double   erand48(unsigned short[3]);23
 : note: 46: note:                                ^
 :                                _Nullable 
 insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be nullchar    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
 :
                       ^207:

                         _Nullable31:
 note: double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                   ^                                                ^
                                    _Nonnull

 insert '_Nonnull' if the array parameter should never be null
                                                  _Nullable double   erand48(unsigned short[3]);
                               ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:199:
 23
                                _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208:170: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h46: noteinsert '_Nonnull' if the pointer should never be null: ::insert '_Nonnull' if the pointer should never be null20836: 

 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);:double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                    ^
                                                ^
                                                  _Nonnull 

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 29:208:6:                       ^:
                         _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hwarning:  :199:51: warning: 170pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :36
 size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 : note                               ^

 : char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */                                                   ^
 insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h        ^
 :
 199:51: note: 29: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
 insert '_Nullable' if the pointer may be null                                    ^
                                     _Nullable

 208:6: note: insert '_Nullable' if the pointer may be nullsize_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
                                                   ^: 
 insert '_Nullable' if the pointer may be null
                                                     _Nullable

 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 :                               ^
 199                                 _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::51170:
 36: note: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208insert '_Nonnull' if the pointer should never be null
 :208:6:size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);:
 : insert '_Nonnull' if the pointer should never be null
                                                    ^
                                                     _Nonnullnote
 29: insert '_Nonnull' if the pointer should never be null: note: double   strtod(const char *, char **) __DARWIN_ALIAS(strtod);
                                    ^
                                     _Nonnull

 insert '_Nonnull' if the pointer should never be null
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 ::                               ^171::
 209                                 _Nonnull 200:18:
 : warning: 26/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h30:::  pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]warningwarning: 208:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 46: :float    strtof(const char *, char **) __DARWIN_ALIAS(strtof); 

                           ^
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      wctomb(char *, wchar_t);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                     ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *gcvt(double, int, char *); /* LEGACY */
                                ^
 :
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                                ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:209/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:200:26::30208 note: ::insert '_Nullable' if the pointer may be null46:  notenote: :: 18
 insert '_Nullable' if the pointer may be null
 :float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 insert '_Nullable' if the pointer may be null                           ^
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */

                            _Nullable
                                                ^
 char    *gcvt(double, int, char *); /* LEGACY */
                                ^
                                                  _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                                 _Nullable

 171:26: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hfloat    strtof(const char *, char **) __DARWIN_ALIAS(strtof);note209: 
 :                           ^insert '_Nullable' if the pointer may be null:

                            _Nonnull
 20830int      wctomb(char *, wchar_t);
                     ^
                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::46::171: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:20034char    *gcvt(double, int, char *); /* LEGACY */
 :                                 ^warning 
 note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:18:                                  _Nonnull
 note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 : insert '_Nonnull' if the pointer should never be null
 : float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 insert '_Nonnull' if the pointer should never be null
 :                                   ^
 int      wctomb(char *, wchar_t);209:char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY *//Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h6:

 :171                                                ^
                                                  _Nonnull                      ^
                      _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::34:208:6: warning /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: note:204:23: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null
 long     a64l(const char *);
                         ^
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hwarning
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                   ^
                                    _Nullable
 char    *gcvt(double, int, char *); /* LEGACY */
        ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208:6: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: ::insert '_Nullable' if the pointer may be null
 171/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h204:char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 34: note        ^:
          _Nullable 
 : insert '_Nonnull' if the pointer should never be null23: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:note:209208:6::: 6float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                   ^
 note: : noteinsert '_Nullable' if the pointer may be null
 : long     a64l(const char *);insert '_Nonnull' if the pointer should never be nullinsert '_Nullable' if the pointer may be null


                                    _Nonnull
                         ^
                          _Nullable
 char    *gcvt(double, int, char *); /* LEGACY */char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h          _Nonnull 
 :        ^
          _Nullable /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:171:35/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h209:30:: 204:: warning
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 23: note: : insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);long     a64l(const char *);

 :char    *gcvt(double, int, char *); /* LEGACY */209                                    ^
                         ^:                                ^

 6: note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                          _Nonnull
 :209:30: note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *gcvt(double, int, char *); /* LEGACY */::
                                ^171:35206:29
 : note: insert '_Nullable' if the pointer may be null: warning                                 _Nullable

 : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:209:char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                               ^
 30char    *gcvt(double, int, char *); /* LEGACY */
 float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);
                                    ^
                                     _Nullable
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206:29:: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nullable' if the pointer may be null :171
 :35:note:  note: insert '_Nonnull' if the pointer should never be null
 insert '_Nonnull' if the pointer should never be null
 char    *gcvt(double, int, char *); /* LEGACY *//Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                               ^
                                 _Nullable 

                                ^
 210/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:206:29: note:                                  _Nonnull
 insert '_Nonnull' if the pointer should never be null
 :21: warningchar    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */float    strtof(const char *, char **) __DARWIN_ALIAS(strtof);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:209: 
 :6
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:                               ^
                                 _Nonnull 
                                    ^
                                     _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: warning: 206
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *gcvt(double, int, char *); /* LEGACY */
        ^
 :int      getsubopt(char **, char * const *, char **);:46: 172warning: :25:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h warning: :209:6: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note
                        ^
 : insert '_Nullable' if the pointer may be null
 long     strtol(const char *__str, char **__endptr, int __base);
                           ^

 char    *gcvt(double, int, char *); /* LEGACY */
        ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:209::25: note6: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: insert '_Nullable' if the pointer may be null:206
 :insert '_Nonnull' if the pointer should never be null
 46:long     strtol(const char *__str, char **__endptr, int __base);
                           ^ 210note: 
                             _Nullable 
 :21: notechar    *gcvt(double, int, char *); /* LEGACY */
 insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: insert '_Nullable' if the pointer may be null
        ^
          _Nonnull :
 int      getsubopt(char **, char * const *, char **);
 172:25                        ^
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                                ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h

                                                  _Nullable 
 :210:21: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: note:                          _Nullableinsert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 206:long     strtol(const char *__str, char **__endptr, int __base);
 46: 
                           ^
                             _Nonnull note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      getsubopt(char **, char * const *, char **);
 : insert '_Nonnull' if the pointer should never be null

 :210:21:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:                        ^
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                                ^ note38: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210
                                                  _Nonnull warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : :
 insert '_Nonnull' if the pointer should never be null21long     strtol(const char *__str, char **__endptr, int __base);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      getsubopt(char **, char * const *, char **);:
 :206:6
 :note:  warning:                                         ^
                        ^
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 insert '_Nullable' if the pointer may be null                         _Nonnull

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */int      getsubopt(char **, char * const *, char **);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:        ^
 17222: 
 :warning                        ^: 38/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :
                         _Nullable
 int      getsubopt(char **, char * const *, char **);206:: note: 
 insert '_Nullable' if the pointer may be null6: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote
 : insert '_Nullable' if the pointer may be null
                         ^
 long     strtol(const char *__str, char **__endptr, int __base);
                                        ^
                                         _Nullable
 char    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:22: :210:21note: insert '_Nullable' if the pointer may be null:         ^
          _Nullable 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:note: 172/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be null
 :206:int      getsubopt(char **, char * const *, char **);38
 :: note
 int      getsubopt(char **, char * const *, char **);: 
                        ^6insert '_Nonnull' if the pointer should never be null
                         _Nonnull

 : note: long     strtol(const char *__str, char **__endptr, int __base);
                                        ^insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
                                         _Nonnull

                         ^210:22: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *ecvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 int      getsubopt(char **, char * const *, char **);
                         ^
 :                          _Nullable
 172/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h        ^
 :39:: warning: 22: note          _Nonnull 
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:int      getsubopt(char **, char * const *, char **);:207:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 31: long     strtol(const char *__str, char **__endptr, int __base);

 warning                         ^                                         ^

 210::                           _Nullable22: notearray parameter is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness-on-arrays]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: insert '_Nonnull' if the pointer should never be null:
 172
 :39double   erand48(unsigned short[3]);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                               ^::
 210int      getsubopt(char **, char * const *, char **);
                         ^
                          _Nonnull note: insert '_Nullable' if the pointer may be null
 :
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:22: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hlong     strtol(const char *__str, char **__endptr, int __base);
 note: :                                         ^207insert '_Nonnull' if the pointer should never be null
 :30:int      getsubopt(char **, char * const *, char **);
                         ^
                          _Nonnull
 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:warning:                                            _Nullable 3031
 : : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:172:39
 insert '_Nullable' if the array parameter may be null: int      getsubopt(char **, char * const *, char **);int      getsubopt(char **, char * const *, char **);

 note                                 ^: 

                                 ^double   erand48(unsigned short[3]);

 insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:30: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:                               ^: long     strtol(const char *__str, char **__endptr, int __base);30
 insert '_Nullable' if the pointer may be null
                                         ^
                                           _Nonnull :
                                _Nullable 

 int      getsubopt(char **, char * const *, char **);
                                 ^
                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:207/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h 174::3122: : notewarning: note:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :          strtold(const char *, char **);: insert '_Nonnull' if the array parameter should never be null
 210:
                            ^30
 :double   erand48(unsigned short[3]);
 insert '_Nullable' if the pointer may be null
                               ^ int      getsubopt(char **, char * const *, char **);
                                 ^
                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:22:
                                _Nonnull 
 note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote:insert '_Nullable' if the pointer may be null: insert '_Nonnull' if the pointer should never be null
 208:
 29: warningint      getsubopt(char **, char * const *, char **);:          strtold(const char *, char **);

 :210pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
                                 ^
                                   _Nonnull:char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 30: 
                            ^
                             _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210note:                                ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be null
 :174/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      getsubopt(char **, char * const *, char **);
 ::22:208:29                                 ^::  note: note: insert '_Nullable' if the pointer may be null

                                   _Nonnull
 38/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: warninginsert '_Nonnull' if the pointer should never be null
 :210:char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */: 38: 
 warning                               ^         strtold(const char *, char **);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

                            ^
                             _Nonnull
 : 
 int      getsubopt(char **, char * const *, char **);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                                 _Nullable                                          ^
 :174:int      getsubopt(char **, char * const *, char **);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210
 :30:                                          ^
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:21038: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :208note: :29:         strtold(const char *, char **);:38
 note: insert '_Nonnull' if the pointer should never be null                                    ^
 insert '_Nullable' if the pointer may be null

 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                               ^
                                 _Nonnull 
 int      getsubopt(char **, char * const *, char **);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                                         ^
                                          _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:208/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:30: :210:38: note:: 46 note: insert '_Nullable' if the pointer may be null
 note:insert '_Nonnull' if the pointer should never be null: int      getsubopt(char **, char * const *, char **);
 insert '_Nullable' if the pointer may be null
                                         ^
                                          _Nullable

 int      getsubopt(char **, char * const *, char **);
                                         ^
                                          _Nonnull         strtold(const char *, char **);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210 
 warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:38                                    ^:
                                     _Nullable
 : note: insert '_Nonnull' if the pointer should never be null
 210:46: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:warning: 174:char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */30: int      getsubopt(char **, char * const *, char **);pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note

 : insert '_Nonnull' if the pointer should never be null
                                         ^         strtold(const char *, char **);int      getsubopt(char **, char * const *, char **);                                                ^



                                    ^
                                          _Nonnull
                                     _Nonnull/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:46:                                                 ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h warning: 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:31::208/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:46:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :46 int      getsubopt(char **, char * const *, char **);
                                                 ^: notewarning
 note: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 : insert '_Nullable' if the pointer may be null
         strtold(const char *, char **);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:46:char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
 note:                                      ^
                                                ^
                                                  _Nullable 
 : insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:174:31int      getsubopt(char **, char * const *, char **);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nullable' if the pointer may be null:
 :208:46: note
                                                 ^
 int      getsubopt(char **, char * const *, char **);: insert '_Nonnull' if the pointer should never be null note: 
                                                  _Nullable
 insert '_Nullable' if the pointer may be null                                                 ^

 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
                                                ^
         strtold(const char *, char **);
                                     ^                                                  _Nonnull 


                                      _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:                                                  _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:46: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208:6174:31note:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:  note: :210:46:insert '_Nonnull' if the pointer should never be nullinsert '_Nonnull' if the pointer should never be null note: 
 insert '_Nonnull' if the pointer should never be null
 : warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]int      getsubopt(char **, char * const *, char **);
         strtold(const char *, char **);
                                     ^


                                      _Nonnull
 char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */
        ^
 int      getsubopt(char **, char * const *, char **);
                                                 ^
                                                  _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:208/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:6:::177:22210:                                                  ^
                                                  _Nonnull 
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210note: 47:: warning: insert '_Nullable' if the pointer may be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 warning
 int      getsubopt(char **, char * const *, char **);
                                                  ^
 47: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]char    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY *//Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210: 

        ^
          _Nullable 
 :47: notepointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      getsubopt(char **, char * const *, char **);:: 208
 insert '_Nullable' if the pointer may be null
 :6: note         strtoll(const char *__str, char **__endptr, int __base);
                            ^

                                                  ^
 : insert '_Nonnull' if the pointer should never be null
 int      getsubopt(char **, char * const *, char **);
                                                  ^
                                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *fcvt(double, int, int *__restrict, int *__restrict); /* LEGACY */::/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:22: note210: :210:
 47insert '_Nullable' if the pointer may be null
 :47:          strtoll(const char *__str, char **__endptr, int __base);
                            ^ note: 
                              _Nullable 
 insert '_Nonnull' if the pointer should never be null
 note: insert '_Nullable' if the pointer may be null
 int      getsubopt(char **, char * const *, char **);
                                                  ^
 int      getsubopt(char **, char * const *, char **);
                                                  ^                                                   _Nonnull
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                                                   _Nullable/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:209:::21330: :32:22:  warning: notewarning: : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]insert '_Nonnull' if the pointer should never be null


 char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */char    *gcvt(double, int, char *); /* LEGACY */
         strtoll(const char *__str, char **__endptr, int __base);


                            ^                                ^                                  ^

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:47: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:209:
 30:213:                              _Nonnull 
 32: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be null
 : note: :insert '_Nullable' if the pointer may be null
 int      getsubopt(char **, char * const *, char **);
                                                  ^
                                                   _Nonnull
 177:35:char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
                                  ^
 insert '_Nullable' if the pointer may be null                                   _Nullable
 
 warning/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:213char    *gcvt(double, int, char *); /* LEGACY */: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:213:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 32: 
                                ^         strtoll(const char *__str, char **__endptr, int __base);
                                         ^
 note
                                 _Nullable
 : insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:35: note: :char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed *//Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
                                  ^:
 insert '_Nullable' if the pointer may be null209:
                                   _Nonnull30: 
 note:          strtoll(const char *__str, char **__endptr, int __base);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 32: insert '_Nonnull' if the pointer should never be null
                                         ^
                                          _Nullable
 char    *gcvt(double, int, char *); /* LEGACY */
                                ^
                                 _Nonnull
 warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:177:35: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 note213:6char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
 209:: warning: : 6                                  ^:insert '_Nonnull' if the pointer should never be nullpointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]


 char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
          strtoll(const char *__str, char **__endptr, int __base);
                                         ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hwarning
                                          _Nonnull
 :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:213        ^
 :177:: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]3632:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *gcvt(double, int, char *); /* LEGACY */ :
        ^
 note: insert '_Nullable' if the pointer may be null: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 213/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h         strtoll(const char *__str, char **__endptr, int __base);:6: 
 note: 
 :                                          ^
 char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
                                  ^209:6insert '_Nullable' if the pointer may be null

                                   _Nullable
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
 :177:        ^
          _Nullable 36: note:
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:213:32: note note: : insert '_Nullable' if the pointer may be null
 insert '_Nullable' if the pointer may be null
 : insert '_Nonnull' if the pointer should never be null
         strtoll(const char *__str, char **__endptr, int __base);
                                          ^char    *gcvt(double, int, char *); /* LEGACY *//Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hchar    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
 :
        ^
 213:6
                                            _Nullable 
                                  ^
          _Nullable 
 : note:                                    _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hinsert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:209:213
 ::17766: char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */::
        ^
          _Nonnull warning:  note36pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :: insert '_Nonnull' if the pointer should never be null
 char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
        ^

 char    *gcvt(double, int, char *); /* LEGACY */
        ^
          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:213:6: note/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:  /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h::210217:29: :note21:insert '_Nullable' if the pointer may be null warning: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]

 array parameter is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness-on-arrays]
 int      getsubopt(char **, char * const *, char **);char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
        ^
 : 
          _Nullable 
                        ^
 long     jrand48(unsigned short[3]) __swift_unavailable("Use arc4random instead.");
                               ^
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:213:6insert '_Nonnull' if the pointer should never be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:: note: 217:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:insert '_Nonnull' if the pointer should never be null

 29: 21char    *initstate(unsigned, char *, size_t); /* no  __DARWIN_ALIAS needed */
         strtoll(const char *__str, char **__endptr, int __base);
                                          ^
                                            _Nonnull 
 : note: note:         ^
          _Nonnull 
 insert '_Nullable' if the array parameter may be null
 insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:217:29:long     jrand48(unsigned short[3]) __swift_unavailable("Use arc4random instead.");/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hint      getsubopt(char **, char * const *, char **);
                        ^
                         _Nullable
                               ^
                                _Nullable  
 warning: :180:22:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h warning: 
 pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]:217
 :29: note: insert '_Nonnull' if the array parameter should never be null
         strtoul(const char *__str, char **__endptr, int __base);
                            ^array parameter is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness-on-arrays]

 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:long     jrand48(unsigned short[3]) __swift_unavailable("Use arc4random instead.");long     jrand48(unsigned short[3]) __swift_unavailable("Use arc4random instead.");210

                               ^
                                _Nonnull /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180::2221:                               ^

 note: insert '_Nullable' if the pointer may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:         strtoul(const char *__str, char **__endptr, int __base);
                            ^: note: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h217:
 insert '_Nonnull' if the pointer should never be null218                              _Nullable 

 :6: warning: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:22: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 note: insert '_Nonnull' if the pointer should never be null
 char    *l64a(long);
 int      getsubopt(char **, char * const *, char **);         strtoul(const char *__str, char **__endptr, int __base);
                            ^

                        ^                              _Nonnull 
        ^:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:3529: note: 
                         _Nonnull

 insert '_Nullable' if the array parameter may be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:22: warning: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 long     jrand48(unsigned short[3]) __swift_unavailable("Use arc4random instead.");
                               ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:218:6:
         strtoul(const char *__str, char **__endptr, int __base); 
 :                                          ^pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]note:                                 _Nullable 


 int      getsubopt(char **, char * const *, char **);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:35                         ^
 insert '_Nullable' if the pointer may be null
 : note: char    *l64a(long);
 insert '_Nullable' if the pointer may be null/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:        ^
          _Nullable 

 210:22217/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:218:6:         strtoul(const char *__str, char **__endptr, int __base);29: 
                                         ^
 : note                                          _Nullablenote: insert '_Nonnull' if the pointer should never be null
 :char    *l64a(long); 

 note: insert '_Nonnull' if the array parameter should never be null: insert '_Nullable' if the pointer may be null        ^

          _Nonnull 
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h
 35:long     jrand48(unsigned short[3]) __swift_unavailable("Use arc4random instead.");
 int      getsubopt(char **, char * const *, char **); note: 
                         ^:219:29                               ^

                          _Nullable
 : warning                                _Nonnull 
 : array parameter is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness-on-arrays]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210:22:insert '_Nonnull' if the pointer should never be null
 note: insert '_Nonnull' if the pointer should never be null
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:218:6         strtoul(const char *__str, char **__endptr, int __base);
 int      getsubopt(char **, char * const *, char **);
                         ^void     lcong48(unsigned short[7]);: warning
                                         ^

                               ^
                                          _Nonnull

                          _Nonnull
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:219: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 :char    *l64a(long);
 2936:210::        ^30 note: insert '_Nullable' if the array parameter may be null
 warning: warningvoid     lcong48(unsigned short[7]);
                               ^

                                _Nullable : pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:218
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
 int      getsubopt(char **, char * const *, char **);:219:
 :29: note         strtoul(const char *__str, char **__endptr, int __base);                                 ^
 : insert '_Nonnull' if the array parameter should never be null

                                          ^/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:2106: 
 void     lcong48(unsigned short[7]);note: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:180:36:insert '_Nullable' if the pointer may be null

 30:                               ^
                                _Nonnull  note: 
 insert '_Nullable' if the pointer may be null
 note: insert '_Nullable' if the pointer may be null
         strtoul(const char *__str, char **__endptr, int __base);
                                          ^
                                            _Nullable 
 char    *l64a(long);int      getsubopt(char **, char * const *, char **);
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:221                                 ^
                                   _Nullable
 :
 19:/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:        ^
          _Nullable 180 warning: 
 :36: /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:218:30:
 note: insert '_Nonnull' if the pointer should never be null
 char    *mktemp(char *);
                     ^
 :6: note: int      getsubopt(char **, char * const *, char **);/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.hnote:221:19: note: insert '_Nullable' if the pointer may be null
 insert '_Nonnull' if the pointer should never be null
 char    *mktemp(char *);

                     ^
                                 ^         strtoul(const char *__str, char **__endptr, int __base);: 

                                          ^
                                            _Nonnull insert '_Nonnull' if the pointer should never be null
                      _Nullablechar    *l64a(long);                                   _Nonnull


        ^
          _Nonnull /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:210
 /Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:
 38: :/Applications/Xcode-9.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/stdlib.h:183warning: pointer is missing a nullability type specifier (_Nonnull, _Null